I don't know if its finished just yet but I haven't posted anything in awhile. Just a gift illustration I'm doing for a friend. Haven't quite settled on abilities yet but sort of settling on something to the following:
Jason the Tenacious
When Jason the Tenacious enters the battlefield, Jason deals damage to target opponent equal to the mana spent to cast him.
When Jason the Tenacious attacks, he gets +X/+X where X is the number of untapped lands defending player controls.