Happy Wall Nut

This is an even happier version of Wall Nut. This plant is odd. Since you can only pick 6 plants, if you pick Wall Nut, it's like picking 7. At random moments a Wall Nut goes into this phase. Nothing changes though, and sometimes they go away. However if they're eating while in this phase, something random happens. The plants and zombies may move at random spots or something. It mixes up the game.