Mirage's Prism

At the beginning of each player's upkeep,
Mirage's Prism deals 1 damage to that player.
Whenever a creature attacks you, it doesn't untap during its controller's untap step.
{3}, sacrifice Mirage's Prism: All creatures you
don't control get -1/-1 and lose all abilities that
aren't mana abilities until end of turn.
"A comedy of errors."