Tomb of Horrors Adventurer | Illustration by Irina Nordsol Initiative is a designation mechanic similar to monarch that allows players to venture into the Undercity dungeon each turn while they have initiative
Blast Zone is a little mana-intensive, but as a land with an activated ability, it's hard for your opponents to interact with
The Jaces were my initial encounter with this process, but Ive had many more opportunities to approach the same artists
It slips in the green Mutagenic Growth with the Phyrexian mana cost of 2 life rather than try to splash green
While it remains to be seen if his mana cost and his needing to tap to perform most of the best artifact combos make him too slow for cEDH, he should get up to some good fun in this precon with all of the different artifacts and his Prismatic Gallery ability
If you're just playing it as a sweeper, you get the Blood Artist effect for free, and some decks can lean into that part of the card