Visions of Glory is a rare Sorcery card from Midnight Hunt Commander (MIC), collector number 70. Current market price: $0.34, TCGplayer market prices via Scryfall.
Create a 1/1 white Human creature token for each creature you control. Flashback {8}{W}{W}. This spell costs {X} less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)