Fyrak, Death's Artisan

+1: You may sacrifice a creature. If you do, put X 1/1 spirit creature tokens with flying onto the battlefield, where X is that creature's power.
-2: Put target creature card from your graveyard onto the battlefield. It gains haste. Exile it at the beginning of the next end step.
-7: Destroy all creatures, then put all creature cards from all graveyards onto the battlefield under your control.