Spooky20

Tranquil Cove enters the battlefield tapped. When Tranquil Cove enters the battlefield, you gain 1 life. {T}: Add {W} or {U}.

Thornwood Falls enters the battlefield tapped. When Thornwood Falls enters the battlefield, you gain 1 life. {T}: Add {G} or {U}.

Swiftwater Cliffs enters the battlefield tapped. When Swiftwater Cliffs enters the battlefield, you gain 1 life. {T}: Add {U} or {R}.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When Lotus-Eye Mystics enters the battlefield, return ...

When Ugin's Construct enters the battlefield, sacrifice a permanent that's one or more colors.

First strike, trample

Creatures you control get +2/+1 until end of turn. Untap those creatures.

Choose target creature you control and target creature an opponent controls. Each of those creatures deals damage equal to its toughness to the other.

Manifest the top two cards of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time ...

Cunning Strike deals 2 damage to target creature and 2 damage to target player or planeswalker. Draw a card.

Bloodfell Caves enters the battlefield tapped. When Bloodfell Caves enters the battlefield, you gain 1 life. {T}: Add {B} or {R}.

Vigilance Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

When Temur War Shaman enters the battlefield, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creatur...

Dash {2}{B} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at th...

When Sandsteppe Outcast enters the battlefield, choose one — • Put a +1/+1 counter on Sandsteppe Outcast. • Create a 1/1 white Spirit creature toke...

Whenever Mardu Shadowspear attacks, each opponent loses 1 life. Dash {1}{B} (You may cast this spell for its dash cost. If you do, it gains haste,...

When Hooded Assassin enters the battlefield, choose one — • Put a +1/+1 counter on Hooded Assassin. • Destroy target creature that was dealt damage...

Choose target creature. Mill three cards, then put a +1/+1 counter on that creature for each creature card in your graveyard.

Prevent all damage that would be dealt to you and permanents you control this turn by sources you don't control. If damage is prevented this way, y...

Douse in Gloom deals 2 damage to target creature and you gain 2 life.

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. If you control a Warrior, that player loses ...

Return target creature to its owner's hand. You create a token that's a copy of that creature.

When Sultai Skullkeeper enters the battlefield, mill two cards.

Exchange control of two target permanents that share a card type. (Artifact, creature, enchantment, land, and planeswalker are card types.)