Boxing Day

At the beginning of your upkeep, you may exchange control of Conjured Currency and target permanent you neither own nor control.

({T}: Add {W}.)

Enchant nonland permanent At the beginning of the upkeep of enchanted permanent's controller, that player sacrifices it unless they pay {X}, where...

{T}: Add {B} or {G}. {B}{G}: Golgari Keyrune becomes a 2/2 black and green Insect artifact creature with deathtouch until end of turn.

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

{T}: Add {W} or {U}. {W}{U}: Azorius Keyrune becomes a 2/2 white and blue Bird artifact creature with flying until end of turn.

Destroy target artifact or enchantment, then populate. (Create a token that's a copy of a creature token you control.)

Scavenge {0} ({0}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only...

Haste

Search your library for an instant card with mana value 3, reveal it, and put it into your hand. Then repeat this process for instant cards with ma...

Counter target spell. You gain 5 life.

Counter target creature spell. Essence Backlash deals damage equal to that spell's power to its controller.

Exile the top X cards of your library. You may cast instant and sorcery spells with mana value X or less from among them without paying their mana ...

When Detention Sphere enters the battlefield, you may exile target nonland permanent not named Detention Sphere and all other permanents with the s...

Create a 3/3 green Centaur creature token, then populate. (Create a token that's a copy of a creature token you control.)

This spell can't be countered. Counter target spell you don't control. Overload {1}{U}{U}{R} (You may cast this spell for its overload cost. If y...

Counter target instant spell.

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, ...

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {G}.)