Singles

Counter target spell with mana value 3 or less. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Flying {U}, Sacrifice Hydromorph Gull: Counter target spell that targets a creature you control.

If any source would deal 1 or more damage to a permanent or player this turn, it deals 2 damage to that permanent or player instead. Draw a card.

{U}, Sacrifice Hydromorph Guardian: Counter target spell that targets a creature you control.

Enchant creature Enchanted creature gets +1/+1 and has flying. Discard a card: Return enchanted creature to its owner's hand.

Mill seven cards. At the beginning of the next end step, exile seven cards from your graveyard.

Target player draws two cards. Flashback—{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchant green or white creature Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card."

{1}{U}, Discard a card: Draw a card. {1}{U}, Sacrifice Compulsion: Draw a card.

Counter target spell unless its controller pays {1} for each card in your graveyard. Madness {U} (If you discard this card, discard it into exile. ...

Whenever Carrion Rats attacks or blocks, any player may exile a card from their graveyard. If a player does, Carrion Rats assigns no combat damage ...

{B}, {T}: Target creature gets -1/-1 until end of turn. Threshold — {3}{B}{B}, {T}: Target creature gets -2/-2 until end of turn. Activate only if ...

Return target creature and target land to their owners' hands.

At the beginning of your upkeep, put a shred counter on Cephalid Vandal. Then mill a card for each shred counter on Cephalid Vandal.

Sacrifice Cephalid Snitch: Target creature loses protection from black until end of turn.

Destroy all enchantments. Threshold — If seven or more cards are in your graveyard, instead destroy all enchantments, then return all cards in your...

Whenever Cephalid Illusionist becomes the target of a spell or ability, mill three cards. {2}{U}, {T}: Prevent all combat damage that would be deal...

Whenever Cephalid Aristocrat becomes the target of a spell or ability, mill two cards.

Draw four cards, then choose X cards in your hand and discard the rest.

Flying {B}: Balshan Collaborator gets +1/+1 until end of turn.

Change the text of target spell or permanent by replacing all instances of one color word with another. (This effect lasts indefinitely.) Flashback...

Discard a card: Switch Aquamoeba's power and toughness until end of turn.

{3}: Target player mills three cards.

As an additional cost to cast this spell, discard X cards. Exile X target attacking creatures.