Eclipse, Marauder of Souls

Meownace (This creature cannot be blocked except by
two or more Cats)
Eclipse, Marauder of Souls enters the battlefield
with three Purr counters on it.
Eclipse, Marauder of Souls gets +1/+1 for each
Purr counter on it.
Whenever another creature dies, put a Purr
counter on Eclipse, Marauder of Souls.
At the beginning of your upkeep, you gain life
equal to the number of Purr counters on Eclipse, Marauder of Souls.