They should help you win once Dragonstorm finds them
Archmages Charm is extremely pushed, a solid permission spell, a good way to build card advantage for hitting land drops, and a fantastic tool against Deaths Shadow, Wild Nacatl, Goblin Guide, Pyxis of Pandemonium, Champion of the Parish, Aether Vial, Delver of Secrets, Hardened Scales, Amulet of Vigor, Benthic Biomancer, Glistener Elf, Noble Hierarch, Viscera Seer, and sometimes even Hexdrinker (just to mention a few)
The most extreme example of this is the One of One Ring
After reading this post, you should have a slightly better understanding of which dimensions of a playing card are the best for you
Along with a symbol on these special dice triggering a planeswalk, there's also a chaos side of the die which causes a wild effect
I definitely think that Im only scratching the surface when it comes to Bloomburrow and Im looking forward to playing these cards and seeing what other people do with them