Aetheric Amplifier is a rare Artifact card from Aetherdrift Commander (DRC), collector number 34. Current market price: $2.34, TCGplayer market prices via Scryfall.
{T}: Add one mana of any color. {4}, {T}: Choose one. Activate only as a sorcery. • Double the number of each kind of counter on target permanent. • Double the number of each kind of counter you have.