Ecus and Mulba, Butchers

Soulbond--Lizard or Barbarian (You may pair this creature with another unpaired Lizard or Barbarian creature when either enters the battlefield. They remain paired for as long as you control both of them.)
Whenever Ecus and Mulba become paired with another creature, choose one:
•Destroy target nonlegendary creature with
converted mana cost 4 or less.
•Ecus and Mulba deal 3 damage to any
target and you gain 3 life.