I think many of those cards are excellent (catch me playing WB cat mutants in the MTGA preview event and chortling), but the most exciting and impressive thing about mutate is the cards they havent made yet
Keep your opponent guessing, spread out your mana costs, wait for the perfect time to cast that counterspell, and bluff your way to victory
If you cant pay the cost, you must sacrifice your card.) I like Mystic Remora a bit better since youre more likely to draw cards off of it, even if the cumulative upkeep effect will eventually force you to sacrifice it
Lost Caverns of Ixalan takes us back to the world of pirates, vampires, merfolk and dinosaurs, and then throws in a few fan-favourite characters as well
Itd have a far higher learning curve than selecting a frame and uploading art