Boxing Day

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 coun...

When Reclamation Sage enters the battlefield, you may destroy target artifact or enchantment.

When Kozilek's Predator enters the battlefield, create two 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this creature: Add {C}."

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

When Fierce Empath enters the battlefield, you may search your library for a creature card with converted mana cost 6 or greater, reveal it, put it...

Whenever you gain life, you may pay {2}. If you do, create a 4/4 green Fungus Beast creature token with trample.

You may reveal a multicolored card you own from outside the game and put it into your hand. Exile Glittering Wish.

All Slivers have "Sacrifice this permanent: You gain 3 life."

{X}, {T}: Exile target creature card with mana value X from a graveyard. Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters o...

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.) When Yavimaya Dryad enters the battlefield, you may sear...

Enchant creature Enchanted creature can't attack or block. Enchanted creature has "{T}: Add one mana of any color."

Flying, haste Echo {1}{G}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice i...

Domain — Until end of turn, creatures you control gain trample and get +1/+1 for each basic land type among lands you control.

Target creature gets +1/+2 until end of turn. Flashback {W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Reach (This creature can block creatures with flying.) Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their cop...

All Saprolings get +1/+1. Morph {3}{G}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost....

Defender At the beginning of your upkeep, put a spore counter on Thallid Shell-Dweller. Remove three spore counters from Thallid Shell-Dweller: Cre...

At the beginning of your upkeep, put a spore counter on Thallid Germinator. Remove three spore counters from Thallid Germinator: Create a 1/1 green...

Until end of turn, target creature gains trample and gets +X/+X, where X is the number of attacking creatures.

At the beginning of your upkeep, put a spore counter on Sporoloth Ancient. Creatures you control have "Remove two spore counters from this creature...

Whenever another creature enters the battlefield under your control, that creature gets +3/+3 until end of turn.

Phantom Wurm enters the battlefield with four +1/+1 counters on it. If damage would be dealt to Phantom Wurm, prevent that damage. Remove a +1/+1 c...

{T}: Each 1/1 creature you control gets +1/+2 until end of turn.