I think the newest Rulebook edition solved the last part of my question already but just wanted to make sure.
In the other FFG thread on "Do what you can" tells us that you should do as much of the card of you can. So that's why we can use Sergeant Zakiel(Play: you may ready and fight with a neighboring creature) or Anger (Play: Ready and Fight with a friendly creature) on an already ready creature.
Does that also mean in the case of Neutron Shark (Play/Fight/Reap: Destroy an enemy creature or artifact and a friendly creature or artifact. Discard the top card of your deck. If that card is not a Logos card, trigger this effect again.) that it doesn't always need to be a one for one destroy trade? Presumably it would get to the point where one player runs out of things to destroy meaning that eventually won't all artifacts and creatures be destro yed so the player will just discard cards until a Logos card is drawn?
Additionally - what if Neutron Shark is destroyed by itself, does the effect keep repeating or does it stop immediately - I think this question was solved in the most recent rulebook where it says effects stop when it's destroyed.
For some more to chew on as well - Bouncing Deathquark has specific wording to ensure the entire effect can be repeated.