[“Mauler” Mithel (Battle of Yavin Battle Pack) and [Darth Vader]]

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While you perform a primary attack, if a friendly Darth Vader or "Backstabber" is in your  [left or right side arc]  at range 0-1, roll 1 additional attack die.

Darth Vader- Can this be:

1. Darth Vader in Tie Advanced [Battle of Yavin]

2. Darth Vader in Tie Advanced [Black Leader]

3. Darth Vader in Defender [Dark Lord of the Sith]

4. Darth Vader Crew in what ever Ship

 

All of them, some of them?

[Fenn Rau Sheathipede-Class]

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Before an enemy ship in your firing arc engages, if you are not stressed, you may gain 1 stress token. If you do, that ship cannot spend tokens to modify dice while it performs an attack during this phase.

Does this prevent you from spending Force Tokens?

Does this prevent Jess Pava from spending her Charge or Charges on Astromechs to use her trick?

While you defend or perform an attack, you may spend 1 charge or 1 non-recurring charge from your equipped  upgrade to reroll up to 1 of your dice for each other friendly ship at range 0-1.