Much like Terra has a double-face card, Kefka gets the same treatment, with Kefka, Court Mage transforming into Kefka, Ruler of Ruin, just like in the games
Setessan Training is an extremely minor effect with the real cost of taking up a spell slot in your deck
You get an extra card in exile to play each turn, while opponents lose their first draw and must play from exile instead
Choose an artifact or creature you control
Gix might make a splash in Commander too, incentivizing your opponents to attack each other and leaving you alone to set up your victory
On one starry hand, you can ignore the keyword completely and cast them as enchantment creatures