5 New Cards

[Zamazenta the OS-Tan Fan]

When your opponent activates a card or effect (Quick Effect): You can discard this card; the activated effect becomes "Target 1 Set Spell/Trap or 1 Monster that is not Special Summoned your opponent controls; destroy it, then your opponent can draw 1 card". Your opponent cannot activate cards or effects in response to this effect's activation. If a card you control leaves the field because of your opponent and you control a Level 7 or higher DARK Synchro Monster: You can Special Summon this card from your GY, but banish it when it leaves the field. You can only use each effect of "Great Doomsday Fiend" once per turn.

If a Link Monsters are Special Summoned (except during the Damage Step): You can Special Summon this card from your hand. If this card is Normal or Special Summoned: You can add 1 Cyberse monster from your Deck to your hand, except "Cyberse Gryphion". During your opponent's Main Phase or Battle Phase (Quick Effect): You can banish both this card and 1 Cyberse Link Monster from your GY; immediately after this effect resolves, Link Summon 1 Link Monster using only Cyberse Monsters you control, or if you control Link-4 or higher Cyberse monster you can also use 2 monsters your opponent controls as material. You can only use each effect of "Cyberse Gryphion" once per turn.

Pendulum Effect:

You can send 1 other card from your hand or field to the GY; place 1 Pendulum Monster from your Deck or face-up Extra Deck with a different Pendulum Scale from this card in your Pendulum Zone, but if you Pendulum Summon banish both this card and that card face-down, also during your End Phase banish all Spells/Traps you control and in your GY face-down. You can only use this effect of "Pendulum Gear Magician" once per turn.

Monster Effect:

If you control no monsters or all monsters you control are Pendulum Monster, you can Special Summon this card (from your hand). You can only Special Summon "Pendulum Gear Magician" once per turn. You can only use each of the following effects of "Pendulum Gear Magician" once per turn. (Quick Effect): You can send this card you control to the Extra Deck face-up, then target 2 cards on the field; banish them. If you control no other monsters, except Pendulum Monsters: You can send 1 Normal Spell from your hand; this effect becomes that Spell's effect when that card is activated, also, you cannot Special Summon monsters for the rest of this turn, except Pendulum Monsters.

1 DARK Tuner + 1+ non-Tuner DARK Synchro Monsters
If this Synchro Summoned or if another DARK Synchro Monster(s) are Special Summoned: You can negate the effects of all face-up monsters your opponent currently controls, until the end of this turn. (Quick Effect): You can banish up to 2 cards on the field. If this card leaves the field because of your opponent: You can Special Summon 1 Level 8 or lower Dragon Synchro Monster from your Extra Deck. (This is treated as a Synchro Summon.) You can only use each effect of "Iridescent Nebulae Dragon" once per turn.

Target as many monsters your opponent as possible; their name becomes "Cosplaying Knight Warrior", they become Warrior monsters, change them to Defense Position, otherwise if its a Link Monster change its ATK to 0, also Special Summon this card as a Normal Monster (Warrior/EARTH/Level 5/ATK 2000/DEF 2000) (this card is also still a Trap), then, if your added a card from their Main Deck to their hand you can Special Summon 1 "Cosplayer Token" (Warrior/Tuner/EARTH/Level 3/ATK 0/DEF 0). You can banish this card and 2 other "Cosplaying Knight Warrior" from your GY; draw 2 cards. You can only use each effect of "Cosplaying Knight Warrior" once per turn.

@Loleo @Lone mouse @Horu @Kokoroshi What do yo think of these 5 cards that I made... do you like them.

[Lone mouse]

Great Doomsday Fiend seems to work with Iridescent Nebulae Dragon I like how the trap card has an effect similar to yutos traps in the anime (For their gy ones at least) Griffen is just better goodness from the underworld and Pendulum Gear Magician is ok

[Kokoroshi]

12 hours ago, Zamazenta the OS-Tan Fan said:

When your opponent activates a card or effect (Quick Effect): You can discard this card; the activated effect becomes "Target 1 Set Spell/Trap or 1 Monster that is not Special Summoned your opponent controls; destroy it, then your opponent can draw 1 card". Your opponent cannot activate cards or effects in response to this effect's activation. If a card you control leaves the field because of your opponent and you control a Level 7 or higher DARK Synchro Monster: You can Special Summon this card from your GY, but banish it when it leaves the field. You can only use each effect of "Great Doomsday Fiend" once per turn.

If a Link Monsters are Special Summoned (except during the Damage Step): You can Special Summon this card from your hand. If this card is Normal or Special Summoned: You can add 1 Cyberse monster from your Deck to your hand, except "Cyberse Gryphion". During your opponent's Main Phase or Battle Phase (Quick Effect): You can banish both this card and 1 Cyberse Link Monster from your GY; immediately after this effect resolves, Link Summon 1 Link Monster using only Cyberse Monsters you control, or if you control Link-4 or higher Cyberse monster you can also use 2 monsters your opponent controls as material. You can only use each effect of "Cyberse Gryphion" once per turn.

Pendulum Effect:

You can send 1 other card from your hand or field to the GY; place 1 Pendulum Monster from your Deck or face-up Extra Deck with a different Pendulum Scale from this card in your Pendulum Zone, but if you Pendulum Summon banish both this card and that card face-down, also during your End Phase banish all Spells/Traps you control and in your GY face-down. You can only use this effect of "Pendulum Gear Magician" once per turn.

Monster Effect:

If you control no monsters or all monsters you control are Pendulum Monster, you can Special Summon this card (from your hand). You can only Special Summon "Pendulum Gear Magician" once per turn. You can only use each of the following effects of "Pendulum Gear Magician" once per turn. (Quick Effect): You can send this card you control to the Extra Deck face-up, then target 2 cards on the field; banish them. If you control no other monsters, except Pendulum Monsters: You can send 1 Normal Spell from your hand; this effect becomes that Spell's effect when that card is activated, also, you cannot Special Summon monsters for the rest of this turn, except Pendulum Monsters.

1 DARK Tuner + 1+ non-Tuner DARK Synchro Monsters
If this Synchro Summoned or if another DARK Synchro Monster(s) are Special Summoned: You can negate the effects of all face-up monsters your opponent currently controls, until the end of this turn. (Quick Effect): You can banish up to 2 cards on the field. If this card leaves the field because of your opponent: You can Special Summon 1 Level 8 or lower Dragon Synchro Monster from your Extra Deck. (This is treated as a Synchro Summon.) You can only use each effect of "Iridescent Nebulae Dragon" once per turn.

Target as many monsters your opponent as possible; their name becomes "Cosplaying Knight Warrior", they become Warrior monsters, change them to Defense Position, otherwise if its a Link Monster change its ATK to 0, also Special Summon this card as a Normal Monster (Warrior/EARTH/Level 5/ATK 2000/DEF 2000) (this card is also still a Trap), then, if your added a card from their Main Deck to their hand you can Special Summon 1 "Cosplayer Token" (Warrior/Tuner/EARTH/Level 3/ATK 0/DEF 0). You can banish this card and 2 other "Cosplaying Knight Warrior" from your GY; draw 2 cards. You can only use each effect of "Cosplaying Knight Warrior" once per turn.

@Loleo @Lone mouse @Horu @Kokoroshi What do yo think of these 5 cards that I made... do you like them.

Great Doomsday fiend seems like he’d be fun, especially in abyss actors, phantom knights, or Red-Dragon Archfiend decks.

Gryphon could definitely be good in just about any link deck so always a good thing

Gear magician is a little weird but I could see it used in a odd-eyes deck as xyz fodder

Iredescent Nebulae Dragon looks dangerous and really useful for decks like P.U.N.K. Or any other dark synchro deck that can get level 11s out easily 

Finally, cosplaying knight war looks fun but it’s just not my kind of card. Would definitely like the GY effect though