The more powerful the spell, the higher the likelihood that players can buff the Emperor, making him another great cross between a spellslinger and Voltron commander just like Vivi, only at a fraction of the cost
In Standard, Sephiroth is played in the current Orzhov Sacrifice deck, which can make a powerful combo with Voice of Victory from Tarkir: Dragonstorm by creating creature tokens that are sacrificed at the end of the turn, activating Sephiroth's abilities
The draft environment is all about playing to the board, so you need to prioritize good creatures and better removal
But I interpreted her design and combat role as similar to the white mage, FINAL FANTASY's designated support job
(6/6/2025) If the Equipment copied by the token had any "when [this permanent] enters" abilities, the token also has those abilities, and they'll trigger when it's created