Merine, Robian witch

Hexproof, Robotize {3}{u} (whenever this card destroys a creature during the battle phase you
may pay the cost and place a 4/4 artifact creature on your field)
{2}{u}{t}: Draw the top card of your library, if its an Artifiact or Artifact creature, it can be summoned with Haste but Destroy that card at the end of your turn. If not, place the card in your hand.