Boxing Day

Gearsmith Prodigy gets +1/+0 as long as you control an artifact.

{5}{U}{U}: Frilled Sea Serpent can't be blocked this turn.

Flying Whenever you cast an instant or sorcery spell, Aven Wind Mage gets +1/+1 until end of turn.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Enchant creature Enchanted creature gets +1/+0 and can't be blocked.

When Suncleanser enters the battlefield, choose one — • Remove all counters from target creature. It can't have counters put on it for as long as ...

Shield Mare can't be blocked by red creatures. When Shield Mare enters the battlefield or becomes the target of a spell or ability an opponent con...

Flying

You gain 3 life. Draw a card.

Vigilance (Attacking doesn't cause this creature to tap.) When Militia Bugler enters the battlefield, look at the top four cards of your library. ...

Target creature gets +2/+2 and gains flying until end of turn.

Defender (This creature can't attack.) As long as Novice Knight is enchanted or equipped, it can attack as though it didn't have defender.

Woodland Stream enters the battlefield tapped. {T}: Add {G} or {U}.

Enchant creature Enchanted creature can't attack or block.

Cinder Barrens enters the battlefield tapped. {T}: Add {B} or {R}.

Equipped creature gets +2/+0. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Gearsmith Guardian gets +2/+0 as long as you control a blue creature.

Defender (This creature can't attack.) {3}: Until end of turn, Gargoyle Sentinel loses defender and gains flying.

Flying At the beginning of combat on your turn, you may pay {G}{U}. When you do, put a +1/+1 counter on another target creature you control, and th...

Flying At the beginning of each end step, if you gained life this turn, create a 1/1 black Bat creature token with flying.

Flying When Psychic Symbiont enters the battlefield, target opponent discards a card and you draw a card.