Eren Jaeger

Vigilance
You may exert Eren Jaeger as he attacks and pay, {2}{w}{b}. If you do, exile Eren Jaeger, then return him to the battlefield transformed tapped and attacking under his owner’s control.
{1}{w}{b}: Regenerate Eren Jaeger.
"I will exterminate the Titans... every last one
of them." Eren Jaeger