Streets of New Capenna

Riveteers Requisitioner | Creature | Viashino Rogue | When Riveteers Requisitioner dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") Blitz {2}{R} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.) | Mark Behm

Pugnacious Pugilist | Creature | Ogre Warrior | Whenever Pugnacious Pugilist attacks, create a tapped and attacking 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target." Blitz {3}{R} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.) | Justine Cruz

Pyre-Sledge Arsonist | Creature | Viashino Shaman | {1}, {T}: Pyre-Sledge Arsonist deals X damage to any target, where X is the number of permanents you've sacrificed this turn. | Kekai Kotaki

Unlucky Witness | Creature | Human Citizen | When Unlucky Witness dies, exile the top two cards of your library. Until your next end step, you may play one of those cards. | Tyler Walpole

Sizzling Soloist | Creature | Human Citizen | Alliance — Whenever another creature enters the battlefield under your control, target creature an opponent controls can't block this turn. If this is the second time this ability has resolved this turn, that creature attacks during its controller's next combat phase if able. | Véronique Meignaud

Forge Boss | Creature | Human Warrior | Whenever you sacrifice one or more other creatures, Forge Boss deals 2 damage to each opponent. This ability triggers only once each turn. | Igor Kieryluk

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

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

Cormela, Glamour Thief | Legendary Creature | Vampire Rogue | Haste {1}, {T}: Add {U}{B}{R}. Spend this mana only to cast instant and/or sorcery spells. When Cormela, Glamour Thief dies, return up to one target instant or sorcery card from your graveyard to your hand. | Bram Sels

Corpse Appraiser | Creature | Vampire Rogue | When Corpse Appraiser enters the battlefield, exile up to one target creature card from a graveyard. If a card is put into exile this way, look at the top three cards of your library, then put one of those cards into your hand and the rest into your graveyard. | Josh Hass

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

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