All Might, Number One Hero

Flash, haste, vigilance, trample
If an enemy player controls a creature with power
greater than 8, you may play All Might, Number
One Hero for free.
If an enemy player controls more creatures than
you, All Might, Number One Hero costs {x} less
to play where {x} is the difference in number of
creatures controlled.
It is fine now. Why? Because I am here!