Breach the Multiverse is a rare Sorcery card from March of the Machine Promos (PMOM), collector number 94p. Current market price: $10.51 (foil $11.72), TCGplayer market prices via Scryfall.
Each player mills ten cards. For each player, choose a creature or planeswalker card in that player's graveyard. Put those cards onto the battlefield under your control. Then each creature you control becomes a Phyrexian in addition to its other types.