Kefka, Court Mage // Kefka, Ruler of Ruin Kefka is one of the most sadistic villains in any video game, so its hardly a surprise that he appears in such a spiteful form on a Magic card
Sure, you can get that same deal (or better) for a mere five mana, rather than eight, but then you wouldn't be doing it every turn, turning your lands into 4/4 trampling, vigilant, indestructible threats, and you'd have to actually draw your spell, rather than just having it right there in the command zone
I wonder how this plays out when I compare it to the Black Lotus for the masses, Gilded Lotus (5 Tap: Add three mana of any one color to your mana pool.) This is hard to setup: you need to spend four mana to equip a creature, then the creature needs to deal damage mid game to your opponent-which means that an unblockable or Trample creature will do the trick best
Additionally, Umbreon is informally recognized as the favorite Eeveelution among the community , which just helps its price skyrocket