Nahiri's Wrath
Eldritch Moon — mythic
Sorcery
Nahiri's Wrath rulings:
2016-07-13: Nahiri’s Wrath adds the converted mana costs 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.
2016-07-13: The damage is not divided. Nahiri’s Wrath will deal that much damage to each target.
2016-07-13: You can’t target the same creature or planeswalker multiple times to deal more damage to it.
2016-07-13: If you discard a card with in its mana cost, X is considered to be 0.
2016-07-13: If you cast Nahiri’s Wrath without paying its mana cost, you’ll still choose a value for X and discard X cards.
2016-07-13: If you copy Nahiri’s Wrath, it has the same number of targets and deals the same amount of damage as the original spell.