Genmu MAX, Slain Universe

Mugen Climb X (You may cast this spell for {x} less by tapping X permanents you control)
Galactic Dragon Evolution
When Genmu MAX, Slain Universe enters through Evolution, you get X {e}
Indestructible
Haste
After this creature battles, you may pay {e}{p/b}: untap this card, and if you do, it gains +1/+1 until end of turn.