Maliketh, The Black Blade

Maliketh, The Black Blade enters the battlefield with three +1/+1 counters on it.

Whenever another creature you control dies if it had a +1/+1 counter on it, put +1/+1 counter on Maliketh

When Maliketh dies, create an X/X black and green Hydra creature token where X is the number of +1/+1 counters on Maliketh