Grenade

This can be only equipped to creatures with the subtitle "body."
Equip{w}{r}
When this mod is equipped to a creature, it gains a +1/+1 counter and explosion attacks (whenever this creature kills another creature, if there is another creature, deal damage equal to half of the equipped creature's power to that creature)
Return,{1}{w}{r} (When equipped creature dies, if you pay the cost, you can return this card to your hand that is equipped to that creature, otherwise discard this card)