Hello. I didn't see this on a post and the core rule book doesn't seem to specify this particular problem, and I just want to make sure that my opponent and I had the rule straight.

Okay, so, him and I are playing in a local store tournament, and he had some kind of upgrade setup that let him have two focuses on one ship. Two of my ships had that ship with the two focuses in their firing arc. He can use one focus per one-on-one engagement, is the way we interpreted.

Like this: Ship A fires on his ship (defender), and spends a focus on a focus roll. Resolved as normal.

And the, Ship B fires next, and the question is, can he spend that second focus token in this second engagement, or, does this second focus have to be used when his ship goes to attack?

It wasn't quiet clear for either of us, so I let him do it because it didn't seem illegal or anything. I'm mainly just curious. Thanks guys!

The only restriction on spending focus tokens to modify dice is that it happens during the Modify (Attack/Defense) Dice steps of the attack. Your opponent is free to spend both focus tokens on the same roll, though that would usually not be useful. Spending focus on two consecutive defense rolls is perfectly kosher.

There is now a use for spending multiple focii in an attack: Calculation, when spending 2 focii, becomes Marksmanship.

Sadly, you can't use an arbitrary number of tokens to create an arbitrary number of [{(KABLAM)}] results, though.

I've figured out three Focus in a single "attack." One to activate Blaster Turret, a second to use Calculation on the attack, and the third to just Focus the rest of the attack.