{T}: Add {C} for each artifact you control named Powerstone Shard.
"Light passing through a powerstone is refracted by eternity and colored by planar energy. I wonder how the world appeared through Urza's eyes?" —Teferi
Instant and sorcery spells you cast cost {1} less to cast. Whenever you cast an instant or sorcery spell, put a charge counter on Primal Amulet. Then if there are four or more charge counters on it, you may remove those counters and transform it.
As Primal Clay enters, it becomes your choice of a 3/3 artifact creature, a 2/2 artifact creature with flying, or a 1/6 Wall artifact creature with defender in addition to its other types.
As Progenitor's Icon enters, choose a creature type. {T}: Add one mana of any color. {T}: The next spell of the chosen type you cast this turn can be cast as though it had flash.
Equipped creature gets +2/+1 and has protection from die rolls. (Nothing that lets a player roll a die can block, target, deal damage to, or attach to equipped creature.) Equip {2}
{2}{U}, {T}: Put target creature on the bottom of its owner's library. That creature's controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield and the rest on the bottom of their library in any order. Activate only as a sorcery.
Imprint — When Prototype Portal enters, you may exile an artifact card from your hand. {X}, {T}: Create a token that's a copy of the exiled card. X is the mana value of that card.
As Psychic Paper becomes attached to a creature, choose a creature card name and a creature type. Equipped creature has ward {1}, it can't be blocked, and its name and creature type are the last chosen name and creature type. Equip {2}
{2}, {T}: Add one mana of any color. Put a brick counter on Pyramid of the Pantheon. {T}: Add three mana of any one color. Activate only if there are three or more brick counters on Pyramid of the Pantheon.
{2}, {T}, Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has mana value equal to 1 plus that creature's mana value. Put that card onto the battlefield, then shuffle. Activate only as a sorcery.