Batman, the Dark Knight

As long as your life total is less than or equal to
half your starting life total, Batman, the Dark
Knight has indestructible.
Whenever another nontoken creature you
control dies, target opponent may have you
draw a card. If they don't, you may put a
creature card with equal or lesser toughness
from your hand onto the battlefield.
"I Am Vengeance. I Am The Night. I Am
Batman!" - Bruce Wayne