With all the people building up a Micaiah lately (am admittedly one of them) I realized that she would have incredible synergy with Alm on every level.
Alm is someone who needs to be kept at constant 100% HP to perform effectively, which is hard to do without support because Alm's built in renewal only works every other turn. However, with Micaiah's support skill Alm can get healed every time he finishes combat putting him back at his two-shot percent. Anyone with Ardent could already do this, but in this exchange Micaiah also benefits from losing health to be pushed into brash assault range letting her double on her player phase build. And it has no cap as to how much health it can transfer which means Alm taking a counter attack before he kills the opponent may even benefit you.
On top of that, the 2 most common arena threats are Armored units and dragons. They alone cover both of these. If there does happen to be a green armor Micaiah still can't kill, Alm already covers them because he's a high power red. The only thing stopping these 2 are cavalry units that can engage on Micaiah without taking a hit back (because she beats them too).
Of course this will only be effective when you can play arena without building buff bots and chip damage but I still think it's super cool and is potent outside of arena as well. Thoughts?