Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)Untap target permanent and gain control of it until end of turn. It gains haste until end of turn.
FlashReachWhen Cloudthresher enters, it deals 2 damage to each creature with flying and each player.Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
Reach: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)When Arbor Colossus becomes monstrous, destroy target creature with flying an opponent controls.
Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)Flying, first strikeEnchanted creature gets +4/+4 and has flying and first strike.
FlyingWhenever another creature leaves the battlefield, you may have target player mill two cards.Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
Changeling (This card is every creature type.)Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.