The cost reduction Jhoira's Familiar provides is good with legends, artifacts, sagas, and makes several loop combos viable like Mystic Forge + Sensei's Divining Top
It only works for targeted spells, but if you cast a regular spell, youll at least draw a card
Building a competitive deck usually means tracking down specific rares, which is why demand is more or less consistent
BPhillipYork: This set seems concerned with modified creatures, which makes sense, given all the Spider-Mans and Womans and Villains are essentially modified via lightning or a spider bite or radiation or something
Or do you prefer the thicker Commander stand-ins
There are more traditional transforming cards, such as Garland, Knight of Cornelia, hybrid cards like Jill, Shivas Dominant, and sidequest enchantments