Sir Theran, the Unwilling

Sir Theran, the Unwilling enters the battlefield
with four-1/-1 counters.
{2}, Sacrifice a creature: Remove two-1/-1
counters and add one soul counter.
{4}, Sacrifice a Demigod creature: Remove two
-1/-1 counters and add one soul counter.
Remove two soul counters: Transform
Sir Theran, the Unwilling.