Fall of the Hammer

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)
Create Grond, Hammer of the Underworld, a legendary colourless Equipment artifact token with 'Equipped creature gets +2/+0', 'when Grond enters the battlefield, equip it to target creature you control' and 'Equip - pay 2 life.'
Target creature an opponent controls gets -3/-3 until end of turn.