as s.n.o.t. comes into play, you may stick it onto another creature named s.n.o.t. in play. if you do, all those creatures form a single creature.

s.n.o.t.'s power and toughness are equal to the square of the number of s.n.o.t.s stuck together. (one is a 1/1, two are a 4/4, three are a 9/9, and four are a 16/16.)