Boxing Day

Menace, lifelink Whenever a historic creature you control deals combat damage to a player, create a 1/1 black Assassin creature token with menace. ...

When this creature enters, target creature you control gets +X/+0 until end of turn and up to one target creature an opponent controls gets -0/-X u...

This spell can't be countered. Counter all spells your opponents control and all abilities your opponents control. Create a 1/1 blue and black Faer...

When this creature enters, you may discard a card. If you do, search your library for a creature card, reveal it, put it into your hand, then shuff...

Flying This creature enters with a -1/-1 counter on it. {2}{U}, Remove a counter from this creature: Whenever a creature you control deals combat d...

{G/W}: This creature becomes a Kithkin Scout with base power and toughness 2/3. {1}{G/W}{G/W}: If this creature is a Scout, it becomes a Kithkin So...

Champion an Elf (When this creature enters, sacrifice it unless you exile another Elf you control. When this creature leaves the battlefield, that ...

End-Blaze Epiphany deals X damage to target creature. When that creature dies this turn, exile a number of cards from the top of your library equal...

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) When this creature enters, destroy target nonartifact, n...

Amplify 2 (As this creature enters, put two +1/+1 counters on it for each Beast card you reveal in your hand.) Provoke (Whenever this creature atta...

When this creature enters, if {W}{W} was spent to cast it, return target creature card with mana value 3 or less from your graveyard to the battlef...

Flying, lifelink Each other nontoken creature you control has persist. (When it dies, if it had no -1/-1 counters on it, return it to the battlefie...

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

Each opponent exiles cards from the top of their library until they have exiled cards with total mana value 5 or greater this way. Until end of tur...

You have no maximum hand size. {T}: Add {C}.

Xantcha enters under the control of an opponent of your choice. Xantcha attacks each combat if able and can't attack its owner or planeswalkers its...

Each creature spell you cast with toughness greater than its power costs {1} less to cast. Whenever a creature you control attacks or blocks, it ge...

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that s...

You have no maximum hand size. {T}: Add {C}.

Flash Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's ...

Flash When this creature enters, untap each other Merfolk you control. As long as you attacked with three or more Merfolk this turn, Merfolk you co...

When this creature enters, if {U}{U} was spent to cast it, return up to one other target nonland permanent to its owner's hand. When this creature ...

{T}, Blight 1: Surveil 1. {T}, Blight 2: Exile target card from a graveyard. During your turn, you may cast creature spells from among cards you ow...

When this creature enters, each creature target opponent controls loses all abilities, becomes a Coward in addition to its other types, and has bas...