Strixhaven Stadium

{t}: Add {c}. Put a point counter on Strixhaven
Stadium.
Whenever a creature deals combat damage to
you, remove a point counter from Strixhaven
Stadium.
Whenever a creature you control deals combat
damage to an opponent, put a point counter on
Strixhaven Stadium. Then if it has ten or more
point counters on it, remove them all and that
player loses the game.