More importantly, though, it gives your auras a second chance by allowing you to cast them from the graveyard for a turn after they are put in
It looks like a very fun card to resolve though
Tegwyll is a fairly aggressively-costed commander at only three mana and has both flying and deathtouch, making it a deadly creature to contend with
From humble beginnings playing Ayli, Eternal Pilgrim with some janky-ass combos, to Teysa Karlov, Regna & Krav partners, Nalia deArnise and other precons, both Liesa, Shroud of Dusk and Liesa, Forgotten Archangel (two very different decks), Ive tried many different styles
I will say that a split is certainly justifiable, and I would be remiss to not suggest having access to Charm from the board