Boxing Day

{T}: Add one mana of any color. If that mana is spent to cast a non-Human creature spell, that creature enters with an additional +1/+1 counter on it.

When this enchantment enters, create a 1/1 white Ally creature token. Allies you control get +1/+1.

Flying At the beginning of your end step, if this creature didn't attack this turn, put a +1/+1 counter on it.

When this creature enters, gain control of target permanent. At the beginning of your end step, if you control three or more permanents you don't o...

Target creature gets +1/+3 and gains flying until end of turn. Untap it.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Target blocking creature you control gets +2/+2 until end of turn. Draw a card.

When Aang enters, airbend another target creature. (Exile it. While it's exiled, its owner may cast it for {2} rather than its mana cost.) Whenever...

When Aang enters, airbend another target creature. (Exile it. While it's exiled, its owner may cast it for {2} rather than its mana cost.) Whenever...

Flying (This creature can't be blocked except by creatures with flying or reach.) Vigilance (Attacking doesn't cause this creature to tap.) Other c...

Aang has vigilance as long as there's a Lesson card in your graveyard. Whenever another creature you control dies, put a +1/+1 counter on Aang.

Whenever Aang and Katara enter or attack, create X 1/1 white Ally creature tokens, where X is the number of tapped artifacts and/or creatures you c...

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.

({T}: Add {B}.)

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

({T}: Add {U}.)

{1}, {T}: Tap target artifact, creature, or land.

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Exile target creature. Its controller gains life equal to its power.

Assemble X Contraptions. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)

Enchant creature As Loose Lips enters the battlefield, choose a sentence with eight or fewer words. Enchanted creature has flying. Whenever ench...

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.) Pay 3 life: Add {R}.

Rat Colony gets +1/+0 for each other Rat you control. A deck can have any number of cards named Rat Colony.

First strike Noncreature spells cost {1} more to cast.