It's just excellent pressure off EVERYTHING and starts with one of the best opening mids in the game. Not to mention it gives him a safe 50/50, safe armor, oh and gives him Shinnok D4 Hellsparks pressure, every single poke cancelled into Rekka is unbeatable unless they blocked and armored reversaled your point on reaction
rolleyes
, and even if they block the entire thing its actually really nice corner carry for a block string, and a bunch of meter and chip
People can say "oh its too hard" and thats fine, but probably shouldn't downplay the importance of it. I've nearly gotten it consistent after just about an hour of labbing it, I'm already unpunishable by characters without a 7-8 frame reversal I beat 9 frame slides everytime, a bit more practice and I'll be safe everytime, just gotta get that rhythm