Your search for "Altar to Unity 275/298" revealed the following:
Altar to Unity - 275/298 - Uncommon from Riftbound: Origins, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Kudos Productions Card Text:When you hold here, play a 1 Might Recruit unit token in your base.
Altar to Unity - 275/298 - Uncommon (Foil) from Riftbound: Origins, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Kudos Productions Card Text:When you hold here, play a 1 Might Recruit unit token in your base.