Carmen, Fierce Intellectual

Carmen enters with one knowledge counter. At your upkeep, Carmen gains one kowledge counter. If
Carmen has no knowledge counters, exile her.
{u}, Remove one knowledge counter: Draw a card
{w}, Remove two knowledge counters: Double the counters on target creature
{t}, Remove ten knowledge counters: Carmen gains flying, first strike, trample, lifelink, and vigilance
Through scholarship, "Die Luft der Freiheit weht."