Amel'Maria, Dusk Renegade

Fying, Deathtouch
Whenever Amel'Maria, Dusk Renegade attacks,
target opponent sacrifices one permanent.
Whenever Amel'Maria, Dusk Renegade deals
combat damage to a player, untap all creatures
you control. After this combat phase, there is an additional combat phase and main phase.
"Until I have reached my goal, and this world is
saved, we are enemies."