to make the 13th monster put the spring , rock , frog , and cheese
dino
rock spring frog cheese
You mix the Frog, the Sock, the Rock, and the Cheese
mix in the frog, the rock, the cheese and snail.
frog snail cheese spring
Sock, Snail, Cheese, Spring
Frog, sock, spring, cheese Purple Blob Monster 6th monster
you can't mix a monster it's either a Katsuma,Luvli,Poppet,Furi,Zommer,and, Diavlo.
rock sock frog snail
you put frog snail spring sock
snail,cheese,frog,spring
slug frog cheese spring