Venom Retrain

[Plaguespreader Zombie]

|Venom Boa|EARTH|Reptile/Effect|5|
|If you control a face-up "Venom" monster, other than "Venom Boa", you can Normal Summon this card from your hand without any tributes. When this card is Normal Summoned, place 2 "Venom Counters" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) on each face-up monster your opponent controls. Once per turn, you can tribute 1 monster with 0 ATK on either side of the field to Special Summon 1 Level 4 or lower "Venom" monster from your Graveyard.|
|ATK1600|DEF1200|

|Venom Cobra|EARTH|Reptile/Effect|4|
|If your opponent controls a face-up monster with 0 ATK, you can Special Summon this card from your hand in face-down Defense Position . When this card is flipped face-up, distrubite 2 "Venom Counters" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) to all face-up cards your opponent controls.|
|ATK100|DEF2000|

|Venom Serpent|EARTH|Reptile/Effect|4|
|When this card is Summoned, add 1 "Venom" monster from your Graveyard or Deck to your hand. You can tribute 1 face-up monster with 0 ATK on the field to add "Vennominon the King of Poisonous Snakes" or "Vennominga the Deity of Poisonous Snakes" instead.|
|ATK1000|DEF800|

|Venom Snake|EARTH|Reptile/Tuner|3|
|Once per turn, place 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters). on each face-up monster your opponent controls. If your opponent controls a face-up monster with 0 ATK after this cards effect resolves, take control of it until the End Phase. This card cannot attack the turn you activate this effect.|
|ATK1200|DEF600|

|Venom Frog|EARTH|Reptile/Effect|2|
|You can remove 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) from anywhere on the field to Special Summon this card from your hand. If you Special Summon this card this way, it is removed from play when it is sent to the Graveyard.|
|ATK0|DEF0|

|Venom Rattle|EARTH|Reptile/Effect|1|
|You can send 1 "Venom" monster from your Deck to the Graveyard to Special Summon this card from the Graveyard. This effect can only be activated once.. Once per turn, you can remove from play any amount of "Venom Counters" from anywhere on the field to have this card's level increase equal to the amount of "Venom Counters" removed. When this card is removed from the field, distribute "Venom Counters" to anywhere on the field equal to this card's level when it is removed from the field.|
|ATK0|DEF100|

|Venom Python|EARTH|Reptile/Effect|6|
|If a "Venom" monster was used as a Tribute for the Tribute Summon of this card, place 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them) on each face-up monster on your opponent's field. As long as this card remains face-up on the field, your opponent cannot Tribute monsters with "Venom Counters" on them.|
|ATK2000|DEF800|

|Venom Constrictor|EARTH|Reptile/Synchro/Effect|5|
|1 Reptile-type Tuner + 1 or more non-Tuner "Venom" monsters.
When this card is Synchro Summoned, remove all "Venom Counters" from face-up monsters your opponent controls. Draw 1 card for each 2 counters you removed. Once per turn, add 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) to all cards on the field. During your End Phase, destroy all monsters on the field with 0 ATK.|
|ATK1900|DEF1000|

|Venom Snake Dancer|EARTH|Warrior/Synchro/Effect|7|
|1 Reptile-Type Tuner + 1 or more non-Tuner "Venom" monsters.
Once per turn, you can remove 2 "Venom Counters" on the field to Special Summon 1 Level 4 or lower "Venom" monster from your Deck. It cannot be used as a Tribute for a Tribute Summon or Set and it's effect is negated. Monsters Special Summoned by this cards effect are destroyed when this card is removed from the field.|
|ATK2500|DEF1400|

|Venom Call|SPELL|Spell/Normal|
|Remove from play 1 monster on the field with 0 ATK and remove all "Venom Counters" on it. Add 1 "Venom" monster from your Deck to your hand. During the End Phase, Special Summon the removed monster to the field during the End Phase in face-up ATK position.|

|Venomous Bite|SPELL|Spell/Quickplay|
|Remove all "Venom Counters" from 1 monster your opponent controls. Destroy 1 card your opponent controls.|

|Venom Snake Pit|TRAP|Trap/Normal|
|Activate this card only when a "Venom" monster is destroyed by battle. Add "Venom Counters" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them) to the card that destroyed it until it has 0 ATK|

Rulings: Venom effects don't stack (i.e. face-up Snake + face-up Boa, opponent controls monster with 2 Venom counters, only lose 1000 ATK)

[Plaguespreader Zombie]

this forum would be better than rc if people actually bothered to post.

[maximate]

[i]|Venom Boa|EARTH|Reptile/Effect|5|
|If you control a face-up "Venom" monster, other than "Venom Boa", you can Normal Summon this card from your hand without any tributes. When this card is Normal Summoned, place 2 "Venom Counters" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) [b]on each face-up monster your opponent controls[/b]. Once per turn, you can tribute 1 monster with 0 ATK on either side of the field to Special Summon 1 Level 4 or lower "Venom" monster from your Graveyard.|
|ATK1600|DEF1200|[/i]

Wow, minus 1000 ATK when summoned

[i]|Venom Cobra|EARTH|Reptile/Effect|4|
|If your opponent controls a face-up monster with 0 ATK, you can Special Summon this card from your hand in face-down Defense Position. When this card is flipped face-up, distrubite 2 "Venom Counters" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) to all face-up cards your opponent controls.|
|ATK100|DEF2000|[/i]

Good idea, makes the opponent to start thinking whether they need to attack or no

[i]|Venom Serpent|EARTH|Reptile/Effect|4|
|[b]When this card is Summoned, add 1 "Venom" monster from your Graveyard or Deck to your hand.[/b] You can tribute 1 face-up monster with 0 ATK on the field to add "Vennominon the King of Poisonous Snakes" or "Vennominga the Deity of Poisonous Snakes" instead.|
|ATK1000|DEF800|[/i]

Too IMBA? Add Venom Boa / Venom Frog to your hand & it will still activates even if you Special Summon it.

[i]|Venom Snake|EARTH|Reptile/Tuner|3|
|Once per turn, place 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters). on each face-up monster your opponent controls. [b]If your opponent controls a face-up monster with 0 ATK after this cards effect resolves, take control of it until the End Phase.[/b] This card cannot attack the turn you activate this effect.|
|ATK1200|DEF600|[/i]

For Synchro huh? Nice one though

[i]|Venom Frog|EARTH|Reptile/Effect|2|
|You can remove 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) from anywhere on the field to Special Summon this card from your hand. If you Special Summon this card this way, it is removed from play when it is sent to the Graveyard.|
|ATK0|DEF0|
[/i]
It's a nice idea, & better if it's a Tuner

[i]|Venom Rattle|EARTH|Reptile/Effect|1|
|You can send 1 "Venom" monster from your Deck to the Graveyard to Special Summon this card from the Graveyard. [b]This effect can only be activated once..[/b] Once per turn, you can remove from play any amount of "Venom Counters" from anywhere on the field to have this card's level increase equal to the amount of "Venom Counters" removed. When this card is removed from the field, distribute "Venom Counters" to anywhere on the field equal to this card's level when it is removed from the field.|
|ATK0|DEF100|[/i]

It's supposed to be "Each player can only use this effect once per Duel." or "You can only use this effect once per Duel.". Anyway, it's good

[i]|Venom Python|EARTH|Reptile/Effect|6|
|If a "Venom" monster was used as a Tribute for the Tribute Summon of this card, place 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them) on each face-up monster on your opponent's field. As long as this card remains face-up on the field, your opponent cannot Tribute monsters with "Venom Counters" on them.|
|ATK2000|DEF800|[/i]

Anti-Monarch !!! Good

[i]|Venom Constrictor|EARTH|Reptile/Synchro/Effect|5|
|1 Reptile-type Tuner + 1 or more non-Tuner "Venom" monsters.
When this card is Synchro Summoned, remove all "Venom Counters" from face-up monsters your opponent controls. Draw 1 card for each 2 counters you removed. Once per turn, add 1 "Venom Counter" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them, except "Venom" monsters.) to all cards on the field. During your End Phase, destroy all monsters on the field with 0 ATK.|
|ATK1900|DEF1000|[/i]

Well, at least you'll draw 1 card whatsoever

[i]|Venom Snake Dancer|EARTH|Warrior/Synchro/Effect|7|
|1 Reptile-Type Tuner + 1 or more non-Tuner "Venom" monsters.
Once per turn, you can remove 2 "Venom Counters" on the field to Special Summon 1 Level 4 or lower "Venom" monster from your Deck. [b]It cannot be used as a Tribute for a Tribute Summon or Set and it's effect is negated[/b]. Monsters Special Summoned by this cards effect are destroyed when this card is removed from the field.|
|ATK2500|DEF1400|[/i]

Also for Synchro?

[i]|Venom Call|SPELL|Spell/Normal|
|[b]Remove from play[/b] 1 monster on the field with 0 ATK and remove all "Venom Counters" on it. Add 1 "Venom" monster from your Deck to your hand. During the End Phase, Special Summon the removed monster to the field during the End Phase in face-up ATK position.|[/i]

It's supposed to be "Banish"

[i]|Venomous Bite|SPELL|Spell/Quickplay|
|Remove all "Venom Counters" from 1 monster your opponent controls. Destroy 1 card your opponent controls.|[/i]

Wow, instant destroyer, nice idea

[i]|Venom Snake Pit|TRAP|Trap/Normal|
|Activate this card only when a "Venom" monster is destroyed by battle. Add "Venom Counters" (Monsters with "Venom Counters" on them lose 500 ATK for each counter on them) to the card that destroyed it until it has 0 ATK|[/i]

Well, you don't really need it on the first place, but it's good for making Venom Counters

Overall: It's like a Reptilianne Deck, only with Venom Counters