Slyvene, the Forsaken

Reach, vigilance, lifelink, first strike

Way of the Blade- When Slyvene, the Forsaken deals combat damage to a player this creature gains X +1/+1 counters where X is the equivalent of white & black permanents you control.

{8}• Mistress of the Silver Moon- Remove X +1/+1 counters and deal X damage to any target. (X being how ever many counters are on this creature).