Rules Questions thread

I’m afraid I got another question concerning order of resolution because of my turn in this game.

My opponent’s play area:

I play Cursed Ghould to put a -1/-1 rune on Inverse Power Ninja.
Then I play Plague Lab to put a -1/-1 run on all of my opponent’s units.
Question: Does Inverse Power Ninja die?

Bonus Question: Does it make a difference if the other units die because they are Illusions getting targeted or would the answer be the same if it were 3 Wisps dying instead of 3 Illusions?