Cheapest priced copy (Murders at Karlov Manor): $0.49 at Card Kingdom, near mint, their price list as of .
Connecting the Dots 
Enchantment · Rare · Murders at Karlov Manor Promos · #118p
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.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
4 printings · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Murders at Karlov Manor | 118 | Rare | $0.49 | $0.79 |
| Murders at Karlov Manor | 403 | Rare | $0.59 | $0.79 |
| Murders at Karlov Manor Promos | 118p | Rare | $0.49 | $0.99 |
| Murders at Karlov Manor Promos | 118s | Rare | — | $1.49 |
3 rulings from Wizards of the Coast
- 2 February 2024You can pay the cost of "discard your hand" even if your hand contains zero cards.
- 2 February 2024If Connecting the Dots leaves the battlefield before you activate its last ability, any cards exiled by its triggered ability remain exiled face down for the rest of the game. (You still can't look at them.) If you somehow return the same Connecting the Dots to the battlefield, it will be a different object with no connection to those face-down cards.
- 2 February 2024Each Connecting the Dots you control has its own set of face-down exiled cards. Connecting the Dots's last ability puts only those cards into your hand, not those of any other Connecting the Dots.