theyre easy to learn and play with, but are very unlikely to be competitive if played against decks which have been specifically built with powerful combos and strategies in mind
Enlightened Tutor may get you an enchantment or artifact for a single mana, but you lose a card (the tutor), and you still need to cast said enchantment or artifact
Used wisely, you can deal decent damage and control the board with the right timing
Kefkas ability to wear down your opponents while helping you keep a steady supply of new cards feels extremely relevant to the current midrange meta in cEDH, although Im not sure that he will outperform Tymna the Weaver // Kraum, Ludevics Opus
Next is Mickey Mouse Brave Little Tailor, who has five strength, five will power, and four Lore and Evasive (cant be challenged)