Namely, the four available factions (Imperials, Necrons, Chaos, and Tyranids) have been matched to colors from Magic: The Gathering that suit their tabletop playstyle in Games Workshop's wargame
One thing to keep in mind with the Retro Artifacts is that constructed playable is not the same as limited playable
Chemister's Insight is a bit expensive but offers a ton of milling in the late game, when it can trigger each Drowned Secrets twice and each Psychic Corrosion four times, which is a lot of mill in a single turn
This Gruul legend doubles all damage Wolverine would deal, then tacks a +1/+1 counter onto himself at end of turn whenever hes bloodied another creature, and a regenerate ability keeps him swinging through removal and his own pump spells
This damage can be applied from the Bench, which further buffs the game plan you are going for