I really love the work of J.C
Ayara, First of Locthwain works obscenely well in this deck
The ETB trigger will almost always enable an attack you didnt have before, and that means that the Pegasus will have an immediate impact on the board, in addition to being a 4-mana 2/3 Flyer itself
The non-budget version of this deck would add some of the game's best payoffs and enablers like Righteous Valkyrie, Avacyn, Angel of Hope, and Urza's Incubator
Let's say you're playing a deck with a bunch of midrangey creatures that happen to have cycling, like Archfiend of Ifnir, Curator of Mysteries, Krosan Tusker, or whatever powerful cyclers we end up with in Ikoria Standard
She has an attack ability with it to make an 8/8 Scion of the Deep 8/8 Octopus