Belisarius Cawl

Both of this Human's abilities run on a currency the deck rarely tracks explicitly: tapped permanents as fuel, spent not for mana but for activation costs and card selection. The token maker demands two untapped artifacts to tap, which turns a board of Treasures, Clues, and any stray construct into an Astartes assembly line. The dig ability inverts the usual convoke logic: instead of tapping creatures to reduce a cost, it taps X creatures as the cost itself, scaling how deep you look into how wide you've gone. That coupling is the design's quiet elegance, though it demands two different resource pools. The digger runs on creatures; the token maker runs strictly on artifacts, so the 2/2 Astartes Warriors it manufactures cannot loop back to fuel the next Warrior. They are creatures, not artifacts, which means every token you make widens the input for Master of Machines rather than for Ultima Founding. The body is deliberately defensive (a 2/4 built to hold ground rather than swing) because the card's job is to sit back and convert a developed battlefield into repeatable bodies and card advantage. Both abilities carry the tap symbol, so this creature is itself one of the resources on offer, forcing a choice each turn between manufacturing a Warrior and drilling for the artifact that keeps the engine humming.