Action: Focus this ojective with 2 focus tokens to place 1 focus token on a target attacking unit.

So if this objective already has a focus token or multiple focus tokes, it can still perform the action, essentially just buring the objective down under focus tokens, and thusly could do this multiple times per turn?

Also, can this action be performed while a different objective is being attacked.

Conceptually if this is true, then a player could focus down your oppenents attacking units endlessly, thus preventing your opponent from ever attacking.

If you cannot perform this action if this objective focused, it would make more sense and reduce it's crazy power. But how I read it you can perfomr the action, while the objective is focused.

I'll update with where it is in the rulebook in a bit, just wanted to answer your question right away.

When a card effect requires you to place a focus token on it for the cost, if it has already been exhausted (focus tokens are already on it) then you cannot place further tokens on it for the effect and it fizzles.

Thanks for the quick reply, that makes total sense. I knew there had to be something to prevent unlimited use of the action.

OK, found the spot on that in the Core Rules, for future reference. Page 10, titled "Setup" inside the box titled "A Matter of Focus."

To clarify, it's not when the cost is placing a focus token, but when the cost is to focus.

If the card read "place 2 focus tokens on this objective" you could indeed bury it under a pile of focus tokens (and the card would be entirely broken).

To clarify, it's not when the cost is placing a focus token, but when the cost is to focus.

If the card read "place 2 focus tokens on this objective" you could indeed bury it under a pile of focus tokens (and the card would be entirely broken).

Ah, my mistake. Sometimes I miss certain subtle differences when I'm still groggy from waking up. XD

Meh, I'm really just being overly picky as there aren't any cards worded such that placing a focus token is the cost instead of focusing... though there are effects that place focus tokens (eg Jedi Mind Trick) so possibly worth making the distinction.

I'm guessing it's only to keep the difference between your cards and your opponent's clear. You focus your cards but you place focus tokens on theirs.

The only card that I can think of that comes close to placing focus tokens being a cost is Dark Memories. Even so, it's more of a prerequisite for the Reaction and not a cost.

But I digress...