CURATOR COMMENT-Remove the (upgraded) part from the NAME section of the upped table
-Replace the
icon in the ELEMENT section with the word, 'Aether'.
means Aether quanta, and not the element Aether; the two are not interchangeable
-Leave the ATK|HP section of the table blank if the card is not a creature (Do not use the phrase 'N/A' to fill in spots of the table)
It should be noted that NO spell 'lasts' for multiple turns, excluding Poison, which is a damage-over-time effect. Unless you apply a special debuff 'icon' on the opponent that causes their Aether or Darkness creatures to receive that damage (similar to Silence), then I really do think it should be a permanent card, but I can't stop you if you want to retain it as a spell.
It's a decent concept, but it reminds me more of a selective Plague effect that doesn't target two elements (the opposite of Holy Flash) - Aether could use some more CC though, so...