Sling of Many Stones

Living Weapon.
When Sling of Many Stones enters the battlefield, create X artifact tokens named Relentless Stone.
Equipped creature gets +X/+X, where X is equal
to the number of Relentless Stone artifacts you control.
Equipped creature gets, {t}: Create a Relentless
Stone artifact token.
Sacrifice a Relentless Stone artifact: deal 1 damage
to target creature or plainswalker.
Equip Cost: {2}