Megalancosaurus

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Megalancosaurus was fairly small, its adult length was only about 25 centimeters (10 inches). It was built like a chameleon and probably lived a similar arboreal lifestyle, feeding on insects and other small animals. Even its feet were chameleon like, with two toes being opposed to the remaining three. The tail is long, prehensile, and bears a strange claw like organ made of fused vertebrae at its end.