Everythingamajig is a rare Artifact card from Unstable (UST), collector number 147f. Current market price: $1.72 (foil $2.28), TCGplayer market prices via Scryfall.
{1}, {T}: Scry 2. {1}, {T}, Pay 1 life: Create a 0/1 white Goat creature token. {7}, {T}, Sacrifice this artifact: Choose target player. At the beginning of the next end step, exchange life totals with that player, exchange control of all permanents you and that player control, and exchange cards in your hands, cards in your libraries, and cards in your graveyards.