I wouldn't be surprised if Kefka returns in another card, with this one being used to represent a way of dropping poison tokens on your opponent and the other presenting him as a summonable legendary
The upside comes from hitting SEC, SP, or the ultra-rare Manga Rare and Treasure Rare slots
(He would have played it in Standard, too, if it hadnt been banned just weeks prior!) Elk memes, Broko-Woko-Bespoko-Four Loko, and whatever other nonsense Magic Twitter babbles about all pointed to one thing this year: Oko dominated hearts, minds, and battlefields in 2019 like no other.
Different versions of the deck may use different counts of each spell, but the play pattern and overall strategy are the same
Blood Moon, however, is a real problem, and its no surprise that the deck has now added a copy of Boseiju, Who Endures
Archon of Cruelty and Serras Emissary are powerful, yet reasonable alternatives for these legendary powerhouses