Boxing Day

Target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast tha...

As an additional cost to cast this spell, pay X life. Return each artifact and creature card with mana value X from your graveyard to the battlefield.

Opus — Whenever you cast an instant or sorcery spell, target player mills three cards. If five or more mana was spent to cast that spell, that play...

Destroy target creature or planeswalker. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then sh...

You may have this creature assign its combat damage as though it weren't blocked. {2}{G}: Regenerate this creature. (The next time this creature wo...

({T}: Add {U} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

Flying Whenever a Dragon you control attacks, create a 6/6 red Dragon creature token with flying.

Other green creatures you control get +1/+1. Other white creatures you control get +1/+1. {T}: Create Voja, a legendary 2/2 green and white Wolf cr...

Flying Whenever you cast a spell, return target permanent to its owner's hand.

Sacrifice three white creatures: Exile target creature. Whenever another black creature you control dies, create a 1/1 white Spirit creature token ...

({T}: Add {G} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Haste Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Prevent all noncombat damage tha...

As long as equipped creature is tapped, tapped creatures you control get +2/+0. As long as equipped creature is untapped, untapped creatures you co...

({T}: Add {R} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

Flip a coin. If you win the flip, take an extra turn after this one.

({T}: Add {U} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

You gain X life and draw X cards.

You may have this creature enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it...

As this artifact enters, choose two colors. Each spell you cast costs {1} less to cast for each of the chosen colors it is.

Whenever you sacrifice a black creature, you may pay 2 life. If you do, each other player sacrifices a creature of their choice. Whenever you sacri...

({T}: Add {R} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

You can't cast Rakdos unless an opponent lost life this turn. Flying, trample Creature spells you cast cost {1} less to cast for each 1 life your o...

When this creature dies, search your library for any number of creature cards with total mana value 6 or less, put them onto the battlefield, then ...