dinosaur deck mtg commander can someone tell me how can this commander work? : r/magicTCG card ready dinosaur deck mtg commander ULTIMATE

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Sacrifice one of the Wurm artifacts you've just made to the Krak-Clan Ironworks, and then use that four generic mana you've made to pay for Nim Deathmantle's trigger, targetting the Wurmcoil Engine in your graveyard

Dark Wings Bring Your Downfall Ongoing Scheme (An ongoing scheme remains face up until it's abandoned.) Whenever you attack, create a 5/5 black Demon creature token with flying that's tapped and attacking

This card's value skyrockets in multiplayer games

Zirda, the Dawnwaker gives you cost reduction on activated abilities, which means that any of Zacamas abilities cost only 1 mana