Great Owen's Beard

During your upkeep, choose one at random:
•Create a 1/1 red Fire Beetle token;
•Create a 1/1 green Insect token with flying;
•Exile cards from the top of your library until
you exile a creature card with mana value X or
less, where X is the number of creatures you control. You may cast that spell without
paying its mana cost.