Sulfurous Impersonation

When this creature transforms into Sulfurous Impersonation, create a copy of it.
Sulfurous Impersonation gets +X/+X, where X
is the number of creature cards in your graveyard.
When another creature you control named
Sulfurous Impersonation leaves the battlefield, sacrifice Sulfurous Impersonation.
Down the hall crawled a quivering pile of ooze, slimy
cords attached to the sailors like marionette strings.