28 cards where the card is tagged “buff-mana”

A-Carnelian Orb of Dragonkind (Alchemy Horizons: Baldur's Gate #A-177)
A-Jade Orb of Dragonkind (Alchemy Horizons: Baldur's Gate #A-215)
A-Lapis Orb of Dragonkind (Alchemy Horizons: Baldur's Gate #A-127)
Andrios, Roaming Explorer (2021 Heroes of the Realm #1)
Arena of Glory (Modern Horizons 3 #215)
Biophagus (Warhammer 40,000 Commander #87)
Brass's Tunnel-Grinder // Tecutlan, the Searing Rift (The Lost Caverns of Ixalan #135)
Brass's Tunnel-Grinder // Tecutlan, the Searing Rift (The Lost Caverns of Ixalan #135)
Carnelian Orb of Dragonkind (Foundations #534)
Cavern of Souls (The Lost Caverns of Ixalan #269)
Delighted Halfling (The Lord of the Rings: Tales of Middle-earth #158)
Domri, Chaos Bringer (Ravnica Allegiance #166)
Forger's Foundry (Outlaws of Thunder Junction Commander #14)
Generator Servant (Ultimate Masters #133)
Gilanra, Caller of Wirewood (Commander Legends #230)
Guildmages' Forum (Guilds of Ravnica #250)
Hall of the Bandit Lord (Champions of Kamigawa #277)
Jade Orb of Dragonkind (Commander Legends: Battle for Baldur's Gate #236)
Lapis Orb of Dragonkind (Commander Legends: Battle for Baldur's Gate #82)
Opal Palace (Commander Masters #422)
Path of Ancestry (Outlaws of Thunder Junction Commander #310)
Primal Amulet // Primal Wellspring (Ixalan #243)
Primal Amulet // Primal Wellspring (Ixalan #243)
Pyromancer's Goggles (Foundations #677)
Scaled Nurturer (Commander Legends: Battle for Baldur's Gate #252)
Study Hall (Commander 2021 #80)
Sunken Palace (Modern Horizons 3 Commander #81)
The Everflowing Well // The Myriad Pools (The Lost Caverns of Ixalan #56)
The Everflowing Well // The Myriad Pools (The Lost Caverns of Ixalan #56)
The Magical City, New (Unknown Event #RL01b)
Thousand Moons Smithy // Barracks of the Thousand (The Lost Caverns of Ixalan #39)
Thousand Moons Smithy // Barracks of the Thousand (The Lost Caverns of Ixalan #39)

The message was clear to Sorin—time to search for something else.