I just think Rydia's Return is overcosted and not good enough, though it does seem good out of the sideboard for slower matchups
You can combo it with March Of Wretched Sorrow so if you have to discard for hand size you can exile black cards to discount it to gain more life and deal damage to a creature or planeswalker
If the thick stamp holos were first printed with a -15 magenta layer, a portion of the commons and uncommons should also have this too, right
Among these is Spider-Man 2099, an iteration of the character from the future
Loud Ruckus Whenever you complete a dungeon, create a 5/5 red Dragon creature token with flying
With a bit of investment and a lot of creativity, you can do some reckless infinite combos with other cards like Malcolm, Keen-Eyed Navigator, Reckless Fireweaver, and Runed Stalactite making it so you can exile all libraries and get infinite tokens