Theres a long list of ways that this card interacts with your opponents, from pseudo-countering a spell while exiling a planeswalker, to removing two blockers as you try to close the game
(You may cast a card from your graveyard for its mayhem cost if you discarded it this turn
Commander Eriette, the Beguiler Lifelink Whenever an Aura you control becomes attached to a nonland permanent an opponent controls with mana value less than or equal to that Aura's mana value, gain control of that permanent for as long as that Aura is attached to it
8 Kwain, Itinerant Meddler Rabbit Group Hugging If you are playing a group hug deck (a deck that helps other players so you're seen as not a threat while slowly assembling your win condition), Kwain, Itinerant Meddler is often included because it is useful for the strategy
Most decks and formats get a little something from these cards
Key Cards for Azula: Hidden Gem: Yue, the Moon SpiritYue, the Moon Spirit When I first started to noodle with the waterbend ability, it occurred to me one way to "break" it is to run artifacts that don't need to tap for some effect, and I quickly landed on Equipment as the perfect way to pay for some or all of a waterbend cost