Sole Performer is a rare Creature — Elf Performer card from Unfinity (UNF), collector number 154. Current market price: $0.13 (foil $0.15), TCGplayer market prices via Scryfall.
{T}: Add {T}{T}. Activate only once each turn. (While activating an ability, use {T} rather than tapping the permanent to pay for {T}.)