Free Spell

Free Spell allows a unit to cast their next spell without spending any mana. The next ability used costs zero mana regardless of its normal cost, letting the cat fire off an expensive ability for free.

Free Spell should always be spent on your most expensive ability to maximize the mana savings. Do not waste it on a cheap skill when you could be casting your ultimate for free. Combining Free Spell with Double Cast is especially potent, as you get two casts of your biggest spell without spending any mana. The buff is consumed on the next ability use, so plan your turn carefully before acting.