There is nothing really remarkable about Pismashio, it simply has above-average stats and the ability to protect other Plants. Given its survivability, it fits well in the Guardian class and is a solid addition to any beginning player's deck. It can particularly excel in decks with Pecanolith that render it effectively having 4 Strength for a 2-cost, and still having Strength to fall back on should Pecanolith be removed unlike Wall-Nut and Water Chestnut. It is overall a fairly reliable and balanced plant, and any strategies and counters with nuts apply to it as well.
Against[]
While this isn't a dangerous plant in any way, it can give you some trouble on turn 2 because no 2-brain zombie can destroy Pismashio and survive a hit from it at the same time. Tricks like Slammin' Smackdown and Rolling Stone are good counters to it, although playing a superpower on Pismashio is a waste. If your opponent chooses to boost it, Squirrel Herder can always take care of it.
Gallery[]
Staticstics (1.61.38)
Card (1.61.38)
Pismashio's card image
HD Pismashio
Pismashio's textures
Pismashio being played (animated)
Pismashio attacking (1), note how the projectile seems to fly from behind it