In D&D, metallic dragons (bronze, copper, brass) are in opposition to chromatic dragons (red, blue, green, etc.), chromatic being the typical evil, sometimes cruel and selfish dragons while the metallic dragons are mostly altruistic and righteous creatures
Sure, you only get to venture into the dungeon when you untap the artifact and let its victim go, but still
A Streets of New Capenna collector booster contains 15 Magic: The Gathering cards and 1 traditional double-sided foil token card, including a combination of 5 rare or higher rarity cards, 2-5 not so common cards, 4-7 common cards and 1 metropolis land with full-page illustration as a traditional foil card
[c]Chalice of the Void[/c] is one of the signature cards of the archetype, as it can shut out all cards of a certain mana cost
The main card weve seen this for so far is the Therosian god of the Sun, Heliod, with Heliod, the Radiant Dawn and its other face, Heliod, the Warped Eclipse
6 Gemstone Caverns Lands are a pretty easy way to get ahead on mana, especially with cards like Ancient Tomb going around