Your search for "Packed Amphitheater 164/167" revealed the following:
Packed Amphitheater - 164/167 - Uncommon (Foil) from Riftbound: Radiance, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Grafit Studio Card Text:Champion units here have +1 Might.
Packed Amphitheater - 164/167 - Uncommon from Riftbound: Radiance, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Grafit Studio Card Text:Champion units here have +1 Might.
Packed Amphitheater (Ultimate) - 184/167 - Showcase from Riftbound: Radiance, available at 401 Games Canada. Rarity: Showcase Finish: Foil Artist: Fish Art Studio Card Text:Champion units here have +1 Might.