Connecting the Dots is a rare Enchantment card from Murders at Karlov Manor (MKM), collector number 403. Current market price: $0.30 (foil $0.35), TCGplayer market prices via Scryfall.
Whenever a creature you control attacks, exile the top card of your library face down. (You can't look at it.) {1}{R}, Discard your hand, Sacrifice this enchantment: Put all cards exiled with this enchantment into their owners' hands.