Streets of New Capenna

Scheming Fence | Creature | Human Citizen | As Scheming Fence enters the battlefield, you may choose a nonland permanent. Activated abilities of the chosen permanent can't be activated. Scheming Fence has all activated abilities of the chosen permanent except for loyalty abilities. You may spend mana as though it were mana of any color to activate those abilities. | Cristi Balanescu

Snooping Newsie | Creature | Human Rogue | When Snooping Newsie enters the battlefield, mill two cards. (Put the top two cards of your library into your graveyard.) As long as there are five or more mana values among cards in your graveyard, Snooping Newsie gets +1/+1 and has lifelink. | E. M. Gist

Tainted Indulgence | Instant | | Draw two cards. Then discard a card unless there are five or more mana values among cards in your graveyard. | Inka Schulz

Aven Heartstabber | Creature | Bird Assassin | Flying As long as there are five or more mana values among cards in your graveyard, Aven Heartstabber gets +2/+2 and has deathtouch. When Aven Heartstabber dies, mill two cards, then draw a card. | Dan Scott