One shot, one kill

Equipped creature has ", : This creature deals 1 damage to any target" and "Whenever a creature dies, untap this creature." Whenever a Shaman creature enters, you may attach this Equipment to it. Equip

: This creature deals 1 damage to target creature. Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Equipped creature gets +1/+1 and has deathtouch. (Any amount of damage it deals to a creature is enough to destroy that creature.) Equip (: Attach to target creature you control. Equip only as a sorcery.)