This is a downside if you're removing +1/+1 counters or similar, but removing a lore counter from a saga is all upside, keeping it in play for another turn and rebuying your earlier saga abilities
If combat damage dealt to the monarch causes that player to lose the game, the triggered ability that causes the controller of the attacking creature to become the monarch doesn't resolve
Sabin had never wanted to be king, so Edgar used the rigged coin flip as a way to allow Sabin to leave Figaro guilt-free, and pursue his life as a monk as he preferred
Mill decks will definitely be including this Jace Variant, as its ultimate ability is too tempting and hilariously mean to resist, and counter manipulation via Proliferate makes it that much easier to activate
These are just some of the cards that fit well with faeries, and I could have gone further into the flying-matters theme specifically