Artifacts were always colorless for a long time, but modern Magic allows colored mana symbols in the casting costs of artifacts
General Cascade Upgrades For the general upgrades, Id first cut Maelstrom Colossus and add Apex Devastator
[-3]: Exile target artifact or creature
Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.) Creature - Artificer Drix Creature (CTRL to add secondary) Draw Rose, Cutthroat Raider First strike Raid At end of combat on your turn, if you attacked this turn, create a Junk token for each opponent you attacked
I have certainly noticed an upturn in the valuation in general of the other cards on their list
Nowadays, you mostly find it in Duel Commander and the occasional Legacy Merfolk deck