Qin'Kwa'Ta, Life Eater

Qin'Kwa'Ta is white and black. (It isn't colorless.)
Qin'Kwa'Ta, Life-Eater can't be countered.
As an additional cost to cast Qin'Kwa'Ta, pay X
life.
Qin'Kwa'Ta enters the battlefield with X +1/+1 counters on it.
Pay X life: Put X +1/+1 counters on Qin'Kwa'Ta.
Remove X +1/+1 counters from Qin'Kwa'Ta:
You gain X life.
I wanted to make something with life as currency. This is the result.
~Spriy