Rowan, the Baroness of Yartar

Flying.
{x}{b}{b}{t}, You gain X life.
{5}{r}, Put a 5/5 Efreeti token on the battlefield.
Sacrifice an Efreeti token, Rowan, the Baroness
of Yartar gains +10/+0 until the end of the turn.
"Fireball!"
"On your opponents, or on your companions as well?"
"On both."