Yrevos doomed king

Eminence — As long as Yrevos doomed king is in
the command zone or on the battlefield, elf spells you
cast have convoke.
When Yrevos doomed king enters the battlefield, Create
a 1/1 green Elf Warrior creature token for each elf
creature that convoked Yrevos doomed king.
Evoke {w}{b}