Carnival Barker is a rare Creature — Dog Employee card from Unfinity (UNF), collector number 388. Current market price: — (foil $0.37), TCGplayer market prices via Scryfall.
{T}: You have thirty seconds to laud a creature you control to any people outside the game. Until end of turn, that creature gains trample and haste and gets +X/+0, where X is the number of those people who applauded. Activate only as a sorcery and only once.