Jaliya, First to Reform

Whenever one or more creatures you control die,
you may pay {1}{u}{b}{r}. If you do, return Jaliya,
First to Reform from your graveyard to the battlefield.
{x}, Sacrifice Jaliya: Regenerate X target creatures.
You gain life equal to the number of creatures regenerated this way.
"The voice of the wood never fails to call her children
home."