Grek the Ogre - Unknown Event

Grek gets +1/+1 for each differently named token among permanents you control.

Whenever Grek attacks, create one of the following at random you don't already control: a 1/1 green Donkey creature token, a 2/2 white Cat creature token, a 3/3 green Ogre Noble token, a Swamp token, a Food token, or a Gold token.