Krenko, Rabblerouser

Eminence - At the beginning of your upkeep, if
Krenko, Rabblerouser is in your command zone
or on the battlefield, you may reveal a card from
your hand or the top card of your library. If a red
card is revealed this way, create a 1/1 red goblin warrior creature token.
At the beginning of your end step, if you've cast
three red spells this turn, create X 1/1 red goblin warrior creature tokens, where X is the number
of creatures you control