Boxing Day

Flash Flying Spells you cast with mana value 5 or greater cost {1} less to cast and can't be countered.

Mutate {1}{W/U}{R}{R} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the cre...

When Thassa's Oracle enters the battlefield, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on to...

Choose one — • Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your library in a random...

Take an extra turn after this one. If Nexus of Fate would be put into a graveyard from anywhere, reveal Nexus of Fate and shuffle it into its owne...

Constellation — Whenever an enchantment enters the battlefield under your control, you may have Protean Thaumaturge become a copy of another target...

Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on Nadir Kraken and create a 1/1 blue Tentacle creature token.

Flash When Ashiok's Erasure enters the battlefield, exile target spell. Your opponents can't cast spells with the same name as the exiled card. ...

Mutate {3}{R/G}{U}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the cre...

Flash Flying

Enchant creature Enchanted creature gets -5/-0. {2}{U}: Return Agoraphobia to its owner's hand.

Tap target creature you don't control. Overload {3}{U} (You may cast this spell for its overload cost. If you do, change its text by replacing all...

Inspired — Whenever Aerie Worshippers becomes untapped, you may pay {2}{U}. If you do, create a 2/2 blue Bird enchantment creature token with flying.

Mutate {2}{U/B}{G}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the cre...

When Teferi's Tutelage enters the battlefield, draw a card, then discard a card. Whenever you draw a card, target opponent mills two cards. (They ...

If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant. [+1]: Draw a card, then disc...

You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant. [+1]: Draw a card, then disc...

You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant. [+1]: Draw a card, then disc...

You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant. [+1]: Draw a card, then disc...

Return all attacking creatures to their owner's hand.

Mutate {1}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on...

[+1]: Until your next turn, up to one target creature gets -5/-0. [-3]: Return up to two target creatures to their owners' hands. [-7]: Creatures...

Mutate {3}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on...