Flash

Flying

When Aven Interrupter enters, exile target spell. It becomes plotted. (Its owner may cast it as a sorcery on a later turn without paying its mana cost.)

Spells your opponents cast from graveyards or from exile cost more to cast.

Whenever Curie, Emergent Intelligence deals combat damage to a player, draw cards equal to its base power.

, Exile another nontoken artifact creature you control: Curie becomes a copy of the exiled creature, except it has "Whenever this creature deals combat damage to a player, draw cards equal to its base power."

Flying

During turns other than yours, spells you cast cost less to cast.

This spell costs less to cast for each counter among players and permanents.

Trample

Lumbering Megasloth enters tapped.

Flying, ward

Whenever you remove a time counter from Watcher of Hours while it's exiled, surveil 1.

Suspend 6— (Rather than cast this card from your hand, you may pay and exile it with six time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)