Urari, Oni of the Fraying Mind

Whenever Urari, Oni of the Fraying Mind attacks each player sacrifices a creature. Each player who sacrificed a creature this way reveals cards from the top of their library until they reveal a permanent, they put that card into play and the rest into their graveyard.
Whenever Urari, Oni of the Fraying Mind deals combat damage to a player, gain control of target nonland permanent that player controls.