When Aether Adept enters the battlefield, return target creature to its owner's hand.

: Target creature an opponent controls attacks you this turn if able.

Flying

When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Return target instant or sorcery card from your graveyard to your hand.

You may have Clone enter the battlefield as a copy of any creature on the battlefield.

Flying

Whenever Conundrum Sphinx attacks, each player chooses a card name. Then each player reveals the top card of their library. If the card a player revealed has the name they chose, that player puts it into their hand. If it doesn't, that player puts it on the bottom of their library.

Counter target red or green spell.

Whenever Frost Titan becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .

Whenever Frost Titan enters the battlefield or attacks, tap target permanent. It doesn't untap during its controller's next untap step.

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

When enchanted creature becomes the target of a spell or ability, destroy Ice Cage.

Whenever you draw a card, you may have target player mill a card.

If Leyline of Anticipation is in your opening hand, you may begin the game with it on the battlefield.

You may cast spells as though they had flash.

Other Merfolk creatures you control get +1/+1.

: Target Merfolk creature can't be blocked this turn.

Enchant creature

You control enchanted creature.

When Phantom Beast becomes the target of a spell or ability, sacrifice it.

You may choose new targets for target spell.

Tap all creatures target player controls. Those creatures don't untap during that player's next untap step.

Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Time Reversal.

Target player mills half their library, rounded down.

Defender

Whenever Wall of Frost blocks a creature, that creature doesn't untap during its controller's next untap step.