Soulscour

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)

Destroy all nonartifact creatures.

Destroy all creatures with power 3 or greater.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Exile all creatures except those that share a creature type with a creature that convoked this spell, all artifacts, and all enchantments.

Return all artifact, enchantment, and planeswalker cards from your graveyard to the battlefield.

Gain control of target permanent until end of turn. Untap it. It gains haste until end of turn.

Fuse (You may cast one or both halves of this card from your hand.)

Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.