Sonia, The Relentless

Haste, menace, doublestrike, trample, lifelink
At the beggining of your upkeep you get an
experience counter.
Remove an experience counter: Untap target
permanent, it gets +3/+3 and Trample if its a
creature; or destroy target nonland permanent.
If you have 10 or more experience counters this
creature has protection from permanents.