The master sword

Equipped creature gets +2/+2 and, {p/w}{p/c}{p/g}{p/r}{p/u}{p/w},{t}your opponent loses and you gain life equal to the number of mana used to activate this ability plus X where X is equal to the power of the equipped creature.
{8}this artifact becomes a 6/8 with menace, ripple and haste.