K'thrün, Fist of the Ur

Flying, Trample

Non-dragon creatures must attack each turn if able.

At the beginning of combat each turn, untap all creatures. Non-dragon creatures lose all abilities until end of turn.

Whenever a creature attacks, if the defending player has the highest life total, create a food. If the defending player has the lowest life total, create a treasure. if the defending player is neither the highest or lowest, investigate.