The walls seem to just be wet from condensation.
You and Wriggle back away, and you chant "Kaleidoscope Sign -- Spherical Flatter!"
Once again cards spherically surround you. However, this leads to Wriggle having to dodge your pattern and hide in a corner until the cards disappear. You realize that the cards still have just passed through the walls, and nothing broke.
"What the heck is your deal?! Did you forget the very physics of spellcards?!"
Wriggle seems a bit unhappy at you...