Sometimes, you just have to take it all in
1 Non-foil showcase or borderless rare or mythic rare card Can be 1 of: 13 Showcase rares (54.2%) 6 Showcase mythic rares (12.5%) 5 Borderless rares (20.8%) 5 Borderless mythic rares (10.4%) Or Kellan, the Fae-Blooded, available in both the borderless and showcase Adventure treatment
Traveling Chocobo would be great just with the doubling effect, but it comes with the added bonus of being able to play lands and cast Bird spells from the top of your library
Emerald can also be aggro itself, especially with the popular Legendary card, Beast: Relentless, which readies every time an enemy character is damaged
None of these instantly wins the game, but all of them are a great boon to an artifact deck and can keep it running smoothly
The first (and also included in the starter deck) is Fix-It Felix Jr