Your search for "Calm Rune 042/298" revealed the following:
Calm Rune (OGN) - 042/298 - Common from Riftbound: Origins, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Greg Ghielmetti & Leah Chen
Calm Rune (OGN) - 042b/298 - Promo from Riftbound: Organized Play Promos, available at 401 Games Canada. Rarity: Promo Finish: Normal Artist: Greg Ghielmetti & Leah Chen
Calm Rune (Alternate Art) (OGN) - 042a/298 - Showcase from Riftbound: Origins, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Zhongqui Li
Calm Rune (UNL) - R02b - Promo from Riftbound: Unleashed, available at 401 Games Canada. Rarity: Promo Finish: Normal
Calm Rune (SFD) - R02b - Promo from Riftbound: Spiritforged, available at 401 Games Canada. Rarity: Promo Finish: Normal
Calm Rune (Alternate Art) (RAD) - R02a - Showcase from Riftbound: Radiance, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Yeon Art Studio
Calm Rune (UNL) - R02c - Promo from Riftbound: Organized Play Promos, available at 401 Games Canada. Rarity: Promo Finish: Normal Artist: Greg Ghielmetti & Leah Chen