Kashil, the coiled snake

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Islandwalk (This creature can't be blocked as long as defending player controls a Islandwalk.)