Cheapest priced copy (Eldritch Moon): $0.99 at Card Kingdom, near mint, their price list as of .
Nahiri's Wrath 
Sorcery · Mythic · Eldritch Moon · #137
As an additional cost to cast this spell, discard X cards.
Nahiri's Wrath deals damage equal to the total mana value of the discarded cards to each of up to X target creatures and/or planeswalkers.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.99 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 137 | Mythic | $0.99 | $2.49 |
| Eldritch Moon Promos | 137s | Mythic | — | $1.49 |
6 rulings from Wizards of the Coast
- 13 July 2016The damage is not divided. Nahiri's Wrath will deal that much damage to each target.
- 13 July 2016If you copy Nahiri's Wrath, it has the same number of targets and deals the same amount of damage as the original spell.
- 13 July 2016Nahiri's Wrath adds the mana values of the discarded cards in whatever zone they were put into as a result of being discarded, even if they weren't put into a graveyard (due to madness, for example) or are no longer in that zone.
- 13 July 2016If you cast Nahiri's Wrath without paying its mana cost, you'll still choose a value for X and discard X cards.
- 13 July 2016You can't target the same creature or planeswalker multiple times to deal more damage to it.
- 13 July 2016If you discard a card with {X} in its mana cost, X is considered to be 0.