Cheapest priced copy (Future Sight): $6.49 at Card Kingdom, near mint, their price list as of .
Intervention Pact 
Instant · Rare · Future Sight · #8
The next time a source of your choice would deal damage to you this turn, prevent that damage. You gain life equal to the damage prevented this way.
At the beginning of your next upkeep, pay {1}{W}{W}. If you don't, you lose the game.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $6.49 to $16.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Future Sight | 8 | Rare | $6.49 | $16.99 |
2 rulings from Wizards of the Coast
- 1 May 2007The delayed triggered ability will trigger regardless of whether any damage is actually prevented.
- 7 June 2013Although originally printed with a characteristic-defining ability that defined its color, this card now has a color indicator. This color indicator can’t be affected by text-changing effects (such as the one created by Crystal Spray), although color-changing effects can still overwrite it.