Cheapest priced copy (Secret Lair Drop): $34.99 at Card Kingdom, near mint, their price list as of .
Grave Pact 
Enchantment · Mythic · Commander Masters · #639
Whenever a creature you control dies, each other player sacrifices a creature of their choice.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
16 printings · $34.99 to $199.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 144 | Rare | $42.99 | $79.99 |
| Eighth Edition | 137 | Rare | $47.99 | — |
| Eighth Edition | 137★ | Rare | — | $199.99 |
| Ninth Edition | 135 | Rare | $42.99 | — |
| Ninth Edition | 135★ | Rare | — | $89.99 |
| Commander Anthology Volume II | 65 | Rare | $42.99 | — |
| Commander 2011 | 85 | Rare | $42.99 | — |
| Commander Masters | 165 | Mythic | $37.99 | $44.99 |
| Commander Masters | 513 | Mythic | — | — |
| Commander Masters | 639 | Mythic | $49.99 | $54.99Out of stock |
| Planechase | 28 | Rare | $42.99 | — |
| Secret Lair Drop | 2615 | Rare | $34.99 | $34.99Out of stock |
| Stronghold | 60 | Rare | $42.99 | — |
| Wilds of Eldraine: Enchanting Tales | 29 | Mythic | $42.99 | $49.99 |
| Wilds of Eldraine: Enchanting Tales | 73 | Mythic | $39.99 | $74.99 |
| Wilds of Eldraine: Enchanting Tales | 93 | Mythic | — | $179.99 |
6 rulings from Wizards of the Coast
- 1 September 2023In a Two-Headed Giant game, when a creature you control dies, Grave Pact's triggered ability will cause each other player, including your teammate, to sacrifice a creature. Grave Pact's ability won't trigger when a creature your teammate controls dies.
- 1 September 2023None of the players are targeted. A player with hexproof would still sacrifice a creature.
- 1 September 2023If two players each control a Grave Pact and a creature controlled by one of those players dies, a chain reaction happens. First the ability of that player's Grave Pact will trigger, causing each other player to sacrifice a creature. That sacrifice causes the ability of the other player's Grave Pact to trigger, and so on.
- 1 September 2023If you control more than one Grave Pact and a creature you control dies, each of the triggered abilities will trigger. Each other player will sacrifice a creature each time one of those abilities resolves.
- 1 September 2023When the triggered ability resolves, first the player whose turn it is (if it isn't your turn) chooses which creature they will sacrifice, then each other player in turn order does the same, then all chosen creatures are sacrificed at the same time.
- 1 September 2023If multiple creatures you control die at the same time, Grave Pact's ability will trigger that many times.