Your search for "Fierce Guardianship 307" revealed the following:
Fierce Guardianship (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Randy Vargas Card Text:If you control a commander, you may cast this spell without paying its mana cost.Counter target noncreature spell.
Fierce Guardianship (C20) from Commander 2020, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Randy Vargas Card Text:If you control a commander, you may cast this spell without paying its mana cost.Counter target noncreature spell.
Fierce Guardianship (Foil) (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Randy Vargas Card Text:If you control a commander, you may cast this spell without paying its mana cost.Counter target noncreature spell.
Fierce Guardianship (Etched) (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Randy Vargas Card Text:If you control a commander, you may cast this spell without paying its mana cost.Counter target noncreature spell.
Fierce Guardianship - Elemental Frame Showcase (TLE) from Avatar: The Last Airbender Eternal, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Ina Wong Card Text:If you control a commander, you may cast this spell without paying its mana...
Fierce Guardianship - Borderless (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Randy Gallegos Card Text:If you control a commander, you may cast this spell without paying its mana cost.Counter target noncreature spell
Fierce Guardianship - Borderless (Foil) (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Randy Gallegos Card Text:If you control a commander, you may cast this spell without paying its mana cost.Counter target noncreature spell...