This came up in a casual game today and I'm 90% sure I'm overthinking it.

My friend is playing his eObi-Wan/Maz deck against my QG/Rey. Ben has 9 damage on him, so two health left. He's already been activated, and his two die are in the pool. One is a blank and one is a double focus. He also has a Force Training die showing a special and a blank Lone Operative die.

I Riposte two shields off of Qui-Gon and throw them at Ben to finish him off. This triggers his ability to play a blue card for free from my opponent's hand/discard pile. He chooses to play My Ally Is The Force (abbreviated hereafter as MAitF). Lots of really complicated stuff happened after that that I can't wrap my head around, but we can skip all that if the sequencing of this can be clarified first. After MAitF is played, does Obi-Wan immediately die? His die were the only ones in the pool on my opponent's side, so they're the only legal targets for the card. Can he resolve any of Obi-Wan's die with MAitF, or are they removed then and there?

We played it (and I'm almost certain we're wrong) as if Ben's die were still legal targets, which ensued in even more shenanigans. So he resolved the double focus to flip some die, but the double focus stayed in the pool because of MAitF. The card is still technically in the queue, so that triggered the ambush. With the ambush action, he rolled in Maz and resolved two of Ben's die that were still in the pool, using a 3 melee side to kill my Rey (she had 7 damage on her). At that point Obi-Wan was defeated and MAitF went to the discard pile along with all of his upgrades. There were also some other things we were wondering about, like what if he resolved a Lone Operative special off of MAitF to heal damage...would he...not die?

So what's the right sequencing here? I know I'm overthinking it.

Half right and half wrong.

Because Obi-Wan is a "before" ability, he isn't defeated until after you've actually played the card, which includes resolving it. So you can use My Ally is the Force on Obi-Wan's dice, resolving it before it is removed because of his defeat.

Your second part is incorrect, though. When you gain an extra action you take it after all current effects in the queue have resolved, not immediately. So everything that's pending, including Obi-Wan's defeat, has to resolve before he gets the extra action. So by the time he got the extra action, Obi-Wan was defeated and his card was removed.

That being said, wouldn't the Obi-Wan player now have two actions since the ambush granted him an extra?

4 hours ago, PeoplesChampion said:

That being said, wouldn't the Obi-Wan player now have two actions since the ambush granted him an extra?

Yep. They'd have the Ambush action, which they'd take during the opponent's turn. Then it would be their turn.

Is the scenario described by the OP legal? If you play a card with ambush as your free card, you get the ambush action, and resolve that action before Obi Wan dies as well?

47 minutes ago, Kieransi said:

Is the scenario described by the OP legal? If you play a card with ambush as your free card, you get the ambush action, and resolve that action before Obi Wan dies as well?

No, it's not. See my first reply, and the extra actions section of the rules.