Want to surprise your opponent with a combo out of nowhere? and just might be the combo for you. The combo begins in a deck that can reasonably produce red and blue mana. You'll want to play an early Fumarole, and later, the Construct. When it comes time to attack with your seemingly harmless 2/2, you activate the Fumarole's second ability to make it a creature, and then start activating its third ability over and over for 0 mana, flipping the power and toughness. Every time you do so (for 0
If you're going to try to kill Wandering Fumarole with a burn spell that does 1-3 damage, your best bet is to do it in response to them turning it into a 4/1.