Kros Krungle, Gift Dealer

Trample, haste
Elks you control get +1/+1 and flying.
At the beginning of each opponent's upkeep,
that player may pay {2}. If they so, they create
a Treasure token and Kros Krungle's controller
creates a Food token. If they don't, they create a
Rock token and Kros Krungle's controller
creates a Treasure token.