Hulk-Dimension Rift Walker

—Hulkimania will live forever.
You may cast this card for {x} additional mana.
X being how many turns this creature
has indestructible and hexproof. If any
opponent yells "Hulkamania" before this
card is placed on the battlefield discard this card.
If this card is discarded in this manner you
may pay {1}. If you do this card
replaces the first creature you control when it
leaves the battlefield after your end step.