Convergence of Dominion

The Necron design conceit here is a mana artifact turned inside out: instead of adding to a mana pool, it subtracts from a cost that lives in the graveyard. Dynastic Command Node makes every graveyard activated ability two cheaper as long as your commander is on the battlefield, which reframes the yard from a resource you spend once into a repeatable engine. The obvious partners are self-mill and dredge-adjacent cards, unearth creatures, and anything with a hefty activated cost from below: what would normally be a one-shot dig becomes a discount you can lean on turn after turn. The floor on the reduction (never below one mana) is the discipline that keeps it from breaking free-to-activate loops, so it accelerates rather than trivializes. Translocation Protocols exists to feed that same graveyard, milling three at a time to stock the yard with targets for the discount. The card is genuinely conditional in a way that most cost-reducers are not: strip your commander from the battlefield and the whole engine reverts to full price, tying the artifact's value to your commander's presence on the battlefield. That is the wrinkle worth understanding before you slot it: it is not a static rock but a commander-anchored recursion enabler, one that rewards a graveyard already dense with activated abilities and asks nothing of you until you have built that density yourself.