While Blue Devotion was missing a good blue two-drop, and arguably a good one-drop, Mutavault was definitely the true missing link in the archetype (at least as originally conceived)
No, of course not the Corona one
If youre looking to purchase the entire deck at once but arent interested in spending quite so much, there are some easy cuts
Explorer is one clear example of a game mode in which players are asking (or, well, yelling may be a more accurate term, although some are resorting to humor) for more cards there's even a Support Ticket on the topic, with a lot of upvotes
Tezzeret, Cruel Captain Gameplay This fan-favorite planeswalker from Edge of Eternities costs only two generic mana, allowing him to fit into any artifact-based strategy
You might be a Sliver player, and if youre happy being a villain, then thats cool and all, but we arent about that