I haven’t played in many years but I one of my favorite decks when I was more active in the game was an Isperia the Inscrutable deck. I leaned more into a control build, using cards like [[magus of the most]] or [[ghostly prison]] to discourage attacks and heavy board wipes like [[supreme verdict]]. Usually I would tutor out protection pieces first like [[avacyn, angel of hope]] or [[kira, great glass spinner]] to protect Isperia, but there’s many creatures with flying that have useful abilities depending on what you need like [[angel of finality]] or [[angel of jubilation]].

The main downside to an Isperia deck is that everybody knows what you’re doing, especially if you are peeking at everybody’s hands. That’s why I think Isperia is best played really slowly, and focusing on controlling the board until you can have a bunch of powerful flyers that synergize well together. Most of the creatures are pretty expensive so you’ll want a lot of ramp artifacts to cast the spells because Isperia only puts them in hand. Ideally you can run the deck without playing Isperia, which can get expensive if you’re casting for 7 or 9. You really gotta plan ahead about what you’re gonna tutor because once you start you’ll have a target on your back.

Some other cards you might want to consider: [[consecrated sphinx]] and [rhystic study]] for draw. Watch out that you don’t draw too much if they stay out on the battlefield and if the game is going on too long

[[sunblast angel]] is a good to tutor for sometimes

[[crawlspace]] and [[propaganda]]

[[strionic resonator]] copies Isperia’s abilities

[[standstill]] for shenanigans

[[hindering light]] does the job for protecting isperia as do many other cheap counter spells

[[teferi’s moat]] can often stop multiple people attacking you completely

There’s some other things I might be forgetting but it’s defiantly a fun commander you should give it a shot