Urzath, Dark Lord of Nathura

When Urzath, Dark Lord of Nathura enters the battlefield, target opponent sacrifices two
creatures.
{2}{b}{t} Target player sacrifices a creature. Use
this ability only as a Sorcery.
If a creature was sacrificed by Urzath, Dark Lord
of Nathura this turn, You may cast it for its mana
cost and 2 life and put it onto the battlefield
under your control.