Num-burr

Overview
Num-burr is like spikeweed but stackable.

Origins
Based off of a spiky seed burr and the word number.

Details
Num-burr is a plant that acts like spikeweed, when you stack it the number on his forehead adds one; his damage also adds one.

Plant food
Creates num-burrs above, below, to the left and to the right and stacks them if there are some that are already there.