Boxing Day

Colorless spells you cast with mana value 7 or greater cost {1} less to cast. Other colorless creatures you control get +1/+1.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Imskir Iron-Eater enters the battlefield, you draw X...

When Breya, Etherium Shaper enters the battlefield, create two 1/1 blue Thopter artifact creature tokens with flying. {2}, Sacrifice two artifacts:...

({B/P} can be paid with either {B} or 2 life.) Lifelink For each {B} in a cost, you may pay 2 life rather than pay that mana. Whenever you cast a b...

Flash Whenever Phelia, Exuberant Shepherd attacks, exile up to one other target nonland permanent. At the beginning of the next end step, return th...

Spymaster's Vault enters the battlefield tapped unless you control a Swamp. {T}: Add {B}. {B}, {T}: Target creature you control connives X, where X...

Blue spells you cast cost {1} less to cast.

White spells you cast cost {1} less to cast.

Noncreature spells you cast from exile have convoke. (Each creature you tap while casting a noncreature spell from exile pays for {1} or one mana o...

When Chthonian Nightmare enters the battlefield, you get {E}{E}{E} (three energy counters). Pay X {E}, Sacrifice a creature, Return Chthonian Night...

Counter target artifact, creature, or planeswalker spell. Its controller creates a 2/2 blue Bird creature token with flying.

Counter target artifact, creature, or planeswalker spell. Its controller creates a 2/2 blue Bird creature token with flying.

{T}: Add {C}.

As Urza's Incubator enters the battlefield, choose a creature type. Creature spells of the chosen type cost {2} less to cast.

White spells you cast cost {1} less to cast.

Black spells you cast cost {1} less to cast.

Whenever another creature enters the battlefield under your control, you gain 1 life and get {E} (an energy counter). Whenever you attack, you may ...

Sacrifice a land: Target creature you control gains shroud until end of turn. (It can't be the target of spells or abilities.)

{T}: Add {R}. As Cursed Mirror enters the battlefield, you may have it become a copy of any creature on the battlefield until end of turn, except i...

{T}: Add {R}. As Cursed Mirror enters the battlefield, you may have it become a copy of any creature on the battlefield until end of turn, except i...

({B/P} can be paid with either {B} or 2 life.) Lifelink For each {B} in a cost, you may pay 2 life rather than pay that mana. Whenever you cast a b...

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Ward {4} Whene...

Return target permanent card with mana value 3 or less from your graveyard to the battlefield. If this spell was cast from a graveyard, you may cop...

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle. Creatures wit...