Blade of Selves is a rare Artifact — Equipment card from Secret Lair Drop (SLD), collector number 1864. Current market price: $9.14, TCGplayer market prices via Scryfall.
Equipped creature has myriad. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Equip {4}