It was already somewhat well positioned in the meta, particularly against Ruby/Sapphire, and now, with Sapphire/Steel getting hit the hardest with bannings, its far better positioned
This mechanic seems like an interesting and clever way of celebrating the game's most iconic instant and sorcery cards, something the first Strixhaven set did through its Mystical Archive bonus sheet
Just get some boots and a FireshriekerFireshrieker on him
That also gives you something to do with the second ability, because flickering this over and over with 4 or more power makes it a removal powerhouse
Once gamers summon True King of All Calamities, opposing duelists will have difficulty dealing with this powerful monster card
I hope it helped as an introduction to all the ways we can play this amazing game