Misforunate Metal Head

Flying
When Misfortunate Metal Head enters the battlefield, target opponent rolls a d20:
14-20: All Opponents must tap a creature they control.
13: All Opponents must sacrifice a creature they control, lose life equal to the sacrificed creature's toughness, then discard two cards.
1-12: All Opponents must sacrifice a creature they control with 3 power or greater.
"Head protection is always important."