Boxing Day

Whenever Cephalid Constable deals combat damage to a player, return up to that many target permanents that player controls to their owner's hand.

Counter target spell.

Return target permanent to its owner's hand.

Flying (This creature can't be blocked except by creatures with flying or reach.) When Aven Cloudchaser enters the battlefield, destroy target enc...

Flying (This creature can't be blocked except by creatures with flying or reach.) {1}{U}: Target player reveals the top card of their library.

Flying (This creature can't be blocked except by creatures with flying or reach.) When Aven Fisher dies, you may draw a card.

Gain control of target Aura that's attached to a permanent. Attach it to another permanent it can enchant.

{T}: Draw three cards. {2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.

{7}{W}: You gain 5 life.

{3}: Target player mills three cards.

Flying

When Academy Researchers enters the battlefield, you may put an Aura card from your hand onto the battlefield attached to Academy Researchers.

Destroy all creatures. They can't be regenerated.

Flying Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Artifact and enchantment spells your opponents cast cost {2} more to cast. Sacrifice Aura of Silence: Destroy target artifact or enchantment.

Flying

Creatures you control get +1/+1 until end of turn.

Defender (This creature can't attack.) Flying

Flying As Voice of All enters the battlefield, choose a color. Voice of All has protection from the chosen color.

When Venerable Monk enters the battlefield, you gain 2 life.

First strike (This creature deals combat damage before creatures without first strike.)

You have shroud. (You can't be the target of spells or abilities.)

Destroy all enchantments.

Flying