Comsuming Deathshell

Whenever another creature dies, put a +1/+1 counter on Undergrowth Deathshell.
Here is a tale I would like to read to you my friend. Me and my soldiers enter an overgrown cave, filled with moist and gross vines and weeds. Then we set foot on a skull, and then ooze spat on the ground. Before the others could look up, they were already going up, entering the grasp of the abomination I saw up there.