CONTAINS SPOILERS
How To Kill Fiends
Fiends can only be killed by "physical" attacks, meaning they can only receive damage from the attack option and a Warrior's skills. Since they will always attack first, wait to see who dies first then revive them. Attack from there. If you have hyper or shield sprinkles, use them on teammates with high ATK, just so you can get the Fiend out of the way quicker.
