Youll have an early blocker and an evasive creature that can wear an aura or a good piece of equipment, not to mention the possible benefits with mechanics like metalcraft or affinity
Admiral Beckett Brass decks can make great use of Captain Lannery Storm as a result
Like most Magic: The Gathering cards, the value of Kefka, Court Mage // Kefka, Ruler of Ruin depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Final Fantasy)
Youve got your classic blue staples, like Mystic Remora, Rhystic Study, etc., excellent nonblue options, like Archivist of Oghma and Esper Sentinel, and now a certified colorless staple via The One Ring