Cheapest priced copy (Theros Beyond Death): $0.69 at Card Kingdom, near mint, their price list as of .
Erebos's Intervention 
Instant · Rare · Theros Beyond Death Promos · #94p
Choose one —
• Target creature gets -X/-X until end of turn. You gain X life.
• Exile up to twice X target cards from graveyards.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.69 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Theros Beyond Death Promos | 94p | Rare | $2.29 | $1.99 |
| Theros Beyond Death Promos | 94s | Rare | — | $2.29 |
| Theros Beyond Death | 94 | Rare | $0.69 | $0.99 |
| Theros Beyond Death | 313 | Rare | $2.29 | $3.49 |
One ruling from Wizards of the Coast
- 24 January 2020If you choose the first mode and the target creature is an illegal target by the time Erebos’s Intervention tries to resolve, the spell won’t resolve. You won’t gain X life.