Tavka, Wavebreak Prominence

At the beginning of each end step, if an
opponent drew two or more cards this turn,
put a fury counter on Tavka.
{2}, {t}, Remove X fury counters from Tavka:
Create an X/X colorless legendary Human
creature token named Vost Furious with
"{2}: Vost gains double strike until end of turn if
an opponent has more cards in hand than you."
{t}: Add {c}.