Cobrapillar

If a creature dies, this gets it's keywords and its abilities and this gets +X/+Z where X is the power of it and Z is the toughness of the creature.
{t}{b/r}{b/r}, tap Xypth: Target creature gets -7/-7. If it dies, exile it. If it does not, it gets poisoned. (every end step, it gets -1/-1 until it dies unless it's owner sacrifices 1 Crytian bedrock, Technopolium, Typonium, Xylonbixle lemon and an Alaris token.)
This is the transformation of Mutant Caterpillar.