Soulsnare Archer

When you cast Soulsnare Archer, Search your library for an equipment card named Soulsnare Arrows and equip it to Soulsnare Archer without paying it's mana cost.
Whenever Soulsnare Archer deals combat damage to a creature, If it dealt enough damage to kill that creature, Soulsnare Archer gets +0/+X until the end of turn, where X is the amount of damage dealt to that creature.