However, with the Energy saved by using its Air Support Ability, that Retreat Cost of one is a small price to pay
Madam Mim's seven willpower makes her fairly tanky by default, but Sneaky Move cranks up that survivability and throws some offense into the mix
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Fire Crystal's first ability)
The biggest thing to learn are which abilities you can trigger so here are a few great examples of allies with text that includes when, whenever, and at: Katara, Bending Prodigy, South Pole Voyager, Ondu Cleric, Earth Kingdom General, and Hero of Goma Fada