Basic counting skills are recommended for those who read this.

[{Galvantula}]

A set of cards revolving around a card called "Counter Calculator". A few of the cards need search each other, as most of the effects are specific to the number of counters there are on "Counter Calculator". P.S. The Synchros give an advantage to "counter calculator".

[spoiler= Monsters]
Counter Calculator
LIGHT / Level 1 / Machine / Effect
This card can not be destroyed by Battle or by your opponent's card Effects. Your opponent does not take Battle Damage from Battles involving this card. If there is another face up "Counter Box" on your side of the Field, Destroy this card. This card can not be Flipped Face-down by your opponents card Effect. If this Face-up Monster is the only Monster you Control, your opponent's Monsters can Attack directly. Once per turn, you can place 1 Number Counter on this card (Max: 12).
ATK/ 0 DEF/ 0

Numbered Soldier - 1
LIGHT / Level 1 / Machine / Tuner
If a Face-up "Counter Calculator" you control has exactly 1 Number Counter, you can Special Summon this card from your Hand. You can Discard this card from your Hand to add one level 4 or lower "Numbered soldier" Monster from your Deck to your Hand. When this card is Destroyed, you can Add 1 "Counter Calculator" from your Deck to your Hand.
ATK/ 100 DEF/ 100

Numbered Soldier - 2
LIGHT / Level 2 / Machine / Tuner
If this card is Added to your Hand by a card Effect, you can Add 1 "Counter Calculator" from your Graveyard to your Hand. When you Normal Summon this card, if there is exactly 2 Number Counters on a Face-up "Counter Calculator" you control, you can Special Summon 1 Level 4 or lower non-Tuner "Numbered Soldier" from your Graveyard. The Special Summoned Monster's Effect is negated. When this card is sent to the Graveyard for the Synchro Summon of an "Advanced Numbered" Synchro, the Summoned Monster can Attack twice during this turns Battle Phase, but it can not Attack Directly his turn.
ATK/ 200 DEF/ 200

Numbered Soldier - 3
LIGHT / Level 3 / Machine / Tuner
While a Face-up "Counter Calculator" you control has exactly 3 Number Counters, you can Remove this Face-up card from play to Special Summon 1 level 5 or lower "Numbered Soldier" from your Deck. The Special Summoned Monster's ATK and DEF become 0 until the End Phase.
ATK/ 1300 DEF/ 1300

Numbered Soldier - 4
LIGHT / Level 4 / Machine / Effect
Once per Turn, you can Remove 4 Number Counters from a Face-up "Counter calculator" you control to Draw 1 card. While there are 4 or more Number Counters on a Face-up "Counter calculator" you control, this card Gains 400 ATK.
ATK/ 1600 DEF/ 1400

Numbered Soldier - 5
LIGHT / Level 5 / Machine / Effect
If a Face-up "Counter Calculator" you control has exactly 5 Number Counters, you can Special Summon this card from your Hand. Once per turn, if a "Counter Calculator" you control has 5 or more counters, you can inflict 500 Damage to your opponent.
ATK/ 500 DEF/ 2500

Numbered Soldier - 6
LIGHT / Level 6 / machine / Effect
If a Face-up "Counter Calculator" you control has exactly 6 Number Counters, you can remove from play 1 "Numbered Soldier" Monster from your Graveyard to Special Summon this card. During either player's turn, you can Discard 1 "Numbered Soldier" Monster to have this card gain 600 ATK until the end of the Battle Phase. You can remove 6 Number Counters from a Face-up "Counter Calculator" you control to increase the Level of a "Numbered" Soldier you control by up to 6. If you do, your opponent does not take any effect or battle Damage this turn.
ATK/ 1600 DEF/ 2600
[/spoiler]

[spoiler= Spells]

Minus One
Normal / Spell

Remove 1 Number Counter from a Face-up "Counter Calculator" you Control. If there are 5+ Number Counters on a "Counter Calculator" you control, you can Remove 2 Number Counters from it instead. During your End Phase, you can reveal 1 "Number Soldier" Monster in your Hand to Add this card to your Hand.

Plus One
Quick-play / Spell

Place 1 Number Counter on a Face-up "Counter Calculator" you Control. If there are 6+ Number Counters on a "Counter Calculator" you control, you can Place 2 Number Counters to it instead. During your opponent's End Phase, you can Send 1 "Number Soldier" Monster from your Deck to the Graveyard to Add this card to your Hand.

Pocket-Size Calculator
Quick-Play / Spell
Special Summon 1 "Number Calculator" from your Deck, It's Effect is Negated until the End Phase of this Turn.

[/spoiler]

[spoiler= Traps]

Repaired Calculator
Continuous / Trap

Activate this card during your Main Phase. During each End Phase, place 1 Delay Counter on this card. You can Destroy this card with exactly 2 Delay Counters on it to Special Summon 1 "Number Calculator" from your Graveyard. Destroy this card if it has 3 or more Delay Counters.

Miscalculation
Counter / Trap

Activate this card only while a Face-up "Counter Calculator" has 6 or more Number Counters and by Removing 4 Number Counters from it. Negate the Activation of an opponent's Spell, Trap or Monster card Effect.

[/spoiler]

[spoiler= Synchros]

Advanced Numbered Commander - 7
LIGHT / Level 7 / Machine / Synchro / Effect
1 "Numbered Soldier" Tuner + 1 or more non-tuner Machine-type Monsters. When this card is Synchro Summoned, you can select 1 "Counter Calculator" you control, place it in your Spell & Trap card zone as a Continuous Trap card. A face up "Counter Calculator(s)" you control can not be Destroyed by it's own Effect. While there are 7 or more Number counters on a Face-up "Counter Calculator" you control, this card can not be Destroyed by your opponents card Effects. You can Remove 7 Number counters from a "Counter Calculator" You control to Draw 1 card.
ATK/ 2700 DEF/ 1700

Advanced Numbered Guardian - 8
LIGHT / Level 8 / Machine / Synchro / Effect
1 "Numbered Soldier" Tuner + 1 or more non-tuner Machine-type Monsters. When this card is Synchro Summoned, you can select 1 "Counter Calculator" you control, place it in your Spell & Trap card zone as a Continuous Trap card. A face up "Counter Calculator(s)" you control can not be Destroyed by it's own Effect. While there are 8 or more Number counters on a Face-up "Counter Calculator" you control, Face-up Level 4 or lower "Numbered Soldier" Monsters you control can be Destroyed by Battle. You can Remove 8 Number counters from a "Counter Calculator" You control to increase the ATK of all Face-up "Numbered Soldier" Monsters you control by 800 until the End Phase.
ATK/ 2800 DEF/ 800

Advanced Numbered Absorber - 9
LIGHT / Level 8 / Machine / Synchro / Effect
1 "Numbered Soldier" Tuner + 1 or more non-tuner Machine-type Monsters. When this card is Synchro Summoned, you can select 1 "Counter Calculator" you control, place it in your Spell & Trap card zone as a Continuous Trap card. A face up "Counter Calculator(s)" you control can not be Destroyed by it's own Effect. Once per turn, if there are 9 or more Number counters on a Face-up "Counter Calculator" you control, you can inflict 900 Damage to your Opponent. You can Remove 9 Number counters from a "Counter Calculator" you control to Discard 2 random cards from your opponent's Hand.
ATK/ 900 DEF/ 3900
[/spoiler]

Rate/hate/comment. Constructive criticism is appreciated.

[{Galvantula}]

Added 1 Monster and 3 Synchros.