Boxing Day

{T}, Sacrifice Mirror Universe: Exchange life totals with target opponent. Activate this ability only during your upkeep.

All Walls able to block Marble Priest do so. Prevent all combat damage that would be dealt to Marble Priest by Walls.

{T}: Tor Wauki deals 2 damage to target attacking or blocking creature.

Instant and enchantment spells you cast cost up to {2} less to cast.

{4}, {T}: Put a matrix counter on target creature and that creature gains "Remove a matrix counter from this creature: Regenerate this creature." A...

Sacrifice a creature: You gain life equal to the sacrificed creature's toughness. Activate this ability only during your upkeep.

{2}, {T}: Prevent all damage that would be dealt this turn by target creature you control. That creature gets +0/+X until end of turn, where X is i...

{2}, {T}: Exile the top card of your library face down. {0}: Sacrifice Knowledge Vault. If you do, discard your hand, then put all cards exiled wit...

{2}, {T}: Prevent all combat damage that would be dealt by target creature this turn.

Tetsuo Umezawa can't be the target of Aura spells. {U}{B}{B}{R}, {T}: Destroy target tapped or blocking creature.

Creatures without flying can't attack.

{T}: Add {C}{C}.

{2}, {T}: Put a charge counter on Green Mana Battery. {T}, Remove any number of charge counters from Green Mana Battery: Add {G}, then add an addit...

{5}, Sacrifice Gauntlets of Chaos: Exchange control of target artifact, creature, or land you control and target permanent an opponent controls tha...

When Stangg enters the battlefield, create Stangg Twin, a legendary 3/4 red and green Human Warrior creature token. Exile that token when Stangg le...

At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal ...

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) Whenever a player casts a black spell, you gain 1 life.

You may choose not to untap Rubinia Soulsinger during your untap step. {T}: Gain control of target creature for as long as you control Rubinia and ...

At the beginning of your upkeep, you may pay {R}{R}{R}. If you don't, tap Rohgahh of Kher Keep and all creatures named Kobolds of Kher Keep, then a...

{T}: Add {B}.