Asharderis, King of Demons

Flying, Indestructible, Protection from Demons
When Asharderis enters the battlefield, untap all nonland permanents you control.
At the beginning of your upkeep, you may
sacrifice a creature. If you do, Asharderis deals
damage to any target equal to that creature's toughness.
If Asharderis would be put into your graveyard
from anywhere, return him to his owner's hand.
You may cast demon creature cards from your
hand as though they had flash.