ITT: I try to make a weird Day & Night concept.

[Toffee.]

Equanox Shell -EARTH-
Lvl4
[Reptile/Effect]
If this card is Summoned, while there is no "World Clock" Face-Up on the field, add to your hand 1 "Equanox Shell" from your deck. This card gains the following effect, depending on the kind of Counter on a Face-Up "World Clock" on the field:
•Day Counter: This card can attack your Opponent directly.
•Night Counter: This card cannot attack, and this card cannot be destroyed.
1000ATK / 1000DEF

Equanox Jaws -DARK-
Lvl4
[Beast/Effect]
If this card is Summoned, while there is no "World Clock" Face-Up on the field, add to your hand 1 "Equanox Jaws" from your deck. This card gains the following effect, depending on the kind of Counter on a Face-Up "World Clock" on the field:
•Day Counter: Once per turn: Inflict 500 damage to your Opponent.
•Night Counter: This card gains 1000ATK.
1000ATK / 1000DEF

Equanox Saber -EARTH-
Lvl4
[Warrior/Effect]
If this card is Summoned, while there is no "World Clock" Face-Up on the field, add to your hand 1 "Equanox Saber" from your deck. This card gains the following effect, depending on the kind of Counter on a Face-Up "World Clock" on the field:
•Day Counter: Neither player can Special Summon.
•Night Counter: You can Tribute this card: Destroy 1 Face-Up card on the field.
1000ATK / 1000DEF

Equanox Bow -FIRE-
Lvl4
[Fiend/Effect]
If this card is Summoned, while there is no "World Clock" Face-Up on the field, add to your hand 1 "Equanox Bow" from your deck. This card gains the following effect, depending on the kind of Counter on a Face-Up "World Clock" on the field:
•Day Counter: Once per turn you can Discard 1 Spell card: Destroy 1 Spell or Trap card on the field.
•Night Counter: If an "Equanox" monster destroys an Opponent's monster as a result of battle: Draw 1 card.
1000ATK / 1000DEF

Equanox Glider -WIND-
Lvl4
[Fairy/Effect]
If this card is Summoned, while there is no "World Clock" Face-Up on the field, add to your hand 1 "Equanox Glider" from your deck. This card gains the following effect, depending on the kind of Counter on a Face-Up "World Clock" on the field:
•Day Counter: Once per turn: Draw 1 card.
•Night Counter: If this card battles an Opponent's monster, return that monster to your Opponent's hand at the end of the Damage Step.
1000ATK / 1000DEF

Equanox Fool -LIGHT-
Lvl4
[Spellcaster/Effect]
This card cannot attack. If this card is destroyed as a result of battle: Draw 1 card. Then, place this card on top of your deck. Once per turn, you can target 1 Face-Up "World Clock" on the field: Select and activate 1 of the following;
•Remove all Day Counters from it: Place 1 Night Counter on it.
•Remove all Night Counters on it: Place 1 Day Counter on it.
1000ATK / 1000DEF

World Clock -Field Spell-
During each player's End Phase, place 1 Passage Counter on this card. All Face-Up monsters on the field gain 100 ATK and DEF for each Passage Counter on this card. You can Special Summon 1 monster from your hand who's level is equal to the number of Passage Counters on this card. Then, Set this card Face-Down(Only this card's controller can use this effect). During your Standby Phase:
•Place 1 Day Counter on this card. Then, Remove all Night Counters from this card(If any).
•Place 1 Night Counter on this card. Then, Remove all Day Counters from this card(If any).

Time Control - Future Time -Spell-
Pay Half your Life Points. Place up to 10 Passage Counters on a Face-Up "World Clock" you control.

Time Control - Past, Present, Future -Spell-
Banish 2 "Time Control" cards in your Graveyard. Draw 2 cards. Then, Banish this card.

Time Control - Ancient Time -Counter Trap-
Remove 5 Passage Counters from a Face-Up "World Clock" you control. Negate the activation and effect of a Spell or Trap card and return it to the top of your Opponent's deck. Then, During your Opponent's next Draw Phase, the Opponent sends 1 card from their hand to their Graveyard.

Time Control - Fabric of Time -Trap-
Send to your Graveyard 1 "Time Control" card to your Deck. Add to your hand 1 "Equanox" monster OR 1 "World Clock" from your deck.