"Discard this card, THEN target 1 "Aroma" monster in your Graveyard".
Angelica have 0 ATK, so you gain 0 LP but at least you have Angelica in Graveyard.
In "Do A, then do B", B happens after A. These things happen in sequence, not simultaneously. A is required for B, but NOT vice-versa: if A does not happen, then stop; even if B cannot happen, you still do A.
Not sure if you're trying to say that you can discard this without a target in grave first, but to anyone who thinks that: think of Lightsworn Lumina and her effect. You have to have a target in grave first.
Your understanding of how things like this work is pretty flawed.
That doesn't actually apply to whether an activation is legal in the first place. You cannot activate Magical Dimension without a Spellcaster able to be Summoned in your hand, even though the Tribute happens first. It will still Tribute if you can no longer SS for whatever reason, though. That's what your ruling covers.
The same is true for costs. Even if this particular card doesn't have a specific ruling covering it, very similar cards like Monster Reincarnation do.
Also, regardless, like I said, you can't target a 0 ATK monster with her effect anyway, so it still wouldn't be a legal activation even if you could activate it without a valid target already being present.
In fact I was wrong, you need another "Aroma" monster to activate its effect; although I believe that 0 ATK is a valid target, is no sense to activate it with another "Aromaseraphy Angelica"
Anoymous
Wiz
