Call the Gatewatch

(C represents colorless mana.) At the beginning of combat on your turn, reveal the top card of your library. If a creature card is revealed this way, you may have creatures you control other than this creature become copies of that card until end of turn. You may put that card on the bottom of your library.

Whenever another colorless creature you control enters, you may change this creature's base power and toughness to that creature's power and toughness until end of turn.

Untap this creature during each other player's untap step. T: This creature deals 1 damage to any target. C, T: Target creature can't attack or block this turn. CC, T: Draw a card.

Untap this creature during each other player's untap step. T: This creature deals 1 damage to any target. C, T: Target creature can't attack or block this turn. CC, T: Draw a card.

When you cast this spell, if you have fewer than seven cards in hand, draw cards equal to the difference. Menace Discard a card with mana value X: Counter target spell with mana value X.

(C represents colorless mana.) When this creature dies, reveal the top card of your library. You may put that card onto the battlefield if it's a permanent card with mana value 3 or less. Otherwise, put that card into your hand.

(C represents colorless mana.) Trample, haste Whenever this creature becomes the target of a spell an opponent controls, counter that spell unless its controller discards a card.

(C represents colorless mana.) When this creature enters, target opponent reveals their hand. You choose a nonland card from it and exile that card. When this creature leaves the battlefield, target opponent draws a card.