Switching from prison pieces to combo pieces means you deny opponents the chance to come back, but the prison decks are more flexible in putting together a win and can ride a single turn-one spell to victory
And from time to time, WotC makes a cool commander that buffs wraiths, only for players to find that there are only so many playable wraiths to begin with
When Embalming Tools got killed, we changed Embalming Chamber to Embalming Tools because we thought it was a better card concept
Mickey Mouse, Wayward Sorcerer, meanwhile, is a solid card by itself thanks to balanced strength, willpower and lore stats, but becomes even more useful when used together with the Magic Broom, Bucket Brigade cards found in the Amber and Amethyst deck, as they will cost one fewer ink to bring out and then return to your hand (instead of the discard pile) when banished while Mickey is on the field
The ability to play bigger pieces earlier is nice but the real benefit here is being able to play Philoctetes No-Nonsense Instructor and follow him up with a number of low-cost heroes in the same turn
How about Pandemonium