Tezzeret is arguably the most powerful for how much it gives to an artifact-focused blue deck
Vrestin, Menoptra Leader Marcy: If you were able to get this in a Jetmir deck, or even a Tokens Matter deck, I think this could be a pretty scary finisher just from hitting the board with a lot of bodies
If you exiled a land, you can drop it and your land from your hand, or if you exiled two lands, you can drop them both
A cheaper Mickey Mouse, Brave Little Tailor that synergizes with bounce archetypes has a lot of potential for the future of Lorcana
Good Budget Amethyst/Steel Deck Our budget Amethyst/Steel deck is a much more narrow and focused version of the basic deck that goes all in on Merlin, Madam Mim, and the effects you can use to bounce cards back into your hand
For those pursuing Commander decks outside these strategies, very few of blues limited mana ramp and acceleration options are going to consistently make the cut