If you destroy all creatures, youre at an advantage in control decks with few to zero creatures, while if youre already ahead on board with small creatures, Armageddon will slow your opponents down, and Caretaker's Talent will help you outpace your opponents while rebounding
When you challenge an opponent character, you compare your character's Strength to your opponent's character's Willpower and if your Strength is equal to or higher than the opposing Willpower, you then banish that opposing character
I think this will encourage some wrong play, given every player who buys in gives each of their foes incrementally more mana, but I am utterly fascinated to see what happens when this hit the board
Drop an Inventor onto this Location, and they'll get +1 willpower
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 Wind Crystal's first ability)
It can cause chaos and disrupt opponents plans, potentially leaving them open to counterattacks