Boxing Day

Discard a card: Putrid Imp gains flying until end of turn. Threshold — As long as seven or more cards are in your graveyard, Putrid Imp gets +1/+1...

Psychotic Haze deals 1 damage to each creature and each player. Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast ...

{T}, Exile three cards from your graveyard: Target player loses 3 life.

{B}: Nantuko Shade gets +1/+1 until end of turn.

All creatures get -1/-1 until end of turn for each Swamp you control.

{1}{B}, Discard a card: Exile target card from a graveyard. {1}{B}, Sacrifice Mortiphobia: Exile target card from a graveyard.

Flying Discard a card: Return Skywing Aven to its owner's hand.

Reveal a card in your hand, then put that card onto the battlefield if it has the same name as a permanent.

Flying Threshold — As long as seven or more cards are in your graveyard, Possessed Aven gets +1/+1, is black, and has "{2}{B}, {T}: Destroy target...

Until end of turn, if target player would draw a card, instead that player skips that draw and you draw a card.

Draw a card. Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When Llawan, Cephalid Empress enters the battlefield, return all blue creatures your opponents control to their owners' hands. Your opponents can'...

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.

Exile all graveyards.

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.

Flying, first strike

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."