Streets of New Capenna

Courier's Briefcase | Artifact | Treasure | When Courier's Briefcase enters the battlefield, create a 1/1 green and white Citizen creature token. {T}, Sacrifice Courier's Briefcase: Add one mana of any color. {W}{U}{B}{R}{G}, {T}, Sacrifice Courier's Briefcase: Draw three cards. | Josu Hernaiz

Stimulus Package | Enchantment | | When Stimulus Package enters the battlefield, create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.") Sacrifice a Treasure: Create a 1/1 green and white Citizen creature token. | Robin Olausson

Security Rhox | Creature | Rhino Warrior | You may pay {R}{G} rather than pay this spell's mana cost. Spend only mana produced by Treasures to cast it this way. | Lie Setiawan

Cabaretti Charm | Instant | | Choose one — • Cabaretti Charm deals damage equal to the number of creatures you control to target creature or planeswalker. • Creatures you control get +1/+1 and gain trample until end of turn. • Create two 1/1 green and white Citizen creature tokens. | Steve Argyle

Rocco, Cabaretti Caterer | Legendary Creature | Elf Druid | When Rocco, Cabaretti Caterer enters the battlefield, if you cast it, you may search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. | Chris Seaman

Brazen Upstart | Creature | Elf Shaman | Vigilance When Brazen Upstart dies, look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Dallas Williams

Crew Captain | Creature | Human Warrior | Haste Crew Captain has indestructible as long as it entered the battlefield this turn. | Jakub Kasper

Riveteers Charm | Instant | | Choose one — • Target opponent sacrifices a creature or planeswalker they control with the highest mana value among creatures and planeswalkers they control. • Exile the top three cards of your library. Until your next end step, you may play those cards. • Exile target player's graveyard. | Steve Argyle

Mr. Orfeo, the Boulder | Legendary Creature | Rhino Warrior | Whenever you attack, double target creature's power until end of turn. | Daarken