Visions of Dominance is a rare Sorcery card from Midnight Hunt Commander (MIC), collector number 37. Current market price: $0.67, TCGplayer market prices via Scryfall.
Put a +1/+1 counter on target creature, then double the number of +1/+1 counters on it. Flashback {8}{G}{G}. 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.)