Loyal Cultist

Whenever you cast a card from exile, you may
discard a card. If you do, draw a card and put a
+1/+1 counter on Loyal Cultist.
Cards you cast from exile cost {1} less to cast for
each +1/+1 counter on Loyal Cultist.
{t}, Remove two +1/+1 counters from Loyal
Cultist: Until end of turn, you may cast cards
from exile.