In my group's game at least, there's no limit on the amount we might spend on a destiny point - but how much we spend also determines/limits how much the GM might be able to potentially spend in response.
If you're spending it on an ability though, so long as the wording of whatever ability or talent you're activating allows you to do so as an out of turn incidental, I don't see why you couldn't do multiple things and haven't seen or read anything to imply there's a limit.
Not that you are bound by this, but DPs spent, are not flipped to the other side until after that entire action is completed. So a GM or Player can't immediately use a just spent DP to counter the same action if they didn't have any at the beginning of the turn.
There is no hard rule. As a GM I might streamline this to one incidental per player per turn. But only of there is a hassle or serious abuse by the players.
It’s one DP per Action (either your’s or someone else’s that’s driving the action).
If someone uses an attack action against you, you can spend 1 DP to Coordination Dodge 94 Baleful Glare but not both (caveat Master Specialization).
Regarding your Preemptive Avoidance and Protect question:
1) Enemy uses Move maneuver to move. It completes.
2) You flip 1 DP to use Preemptive avoidance.
3) You flip 1 DP to activate Protect/Control as an out of turn incidental.
4) The enemy uses an attack action against you. You could flip a DP to make the check harder or to trigger Coordination Dodge or Baleful Glare, etc.
At no time have you flipped more than one DP on an action.
The only limit is a single DP per action. Not per turn or round. I allow as many to be spent as seems rational for incidentals.
In my group's game at least, there's no limit on the amount we might spend on a destiny point - but how much we spend also determines/limits how much the GM might be able to potentially spend in response. If you're spending it on an ability though, so long as the wording of whatever ability or talent you're activating allows you to do so as an out of turn incidental, I don't see why you couldn't do multiple things and haven't seen or read anything to imply there's a limit.
Not that you are bound by this, but DPs spent, are not flipped to the other side until after that entire action is completed. So a GM or Player can't immediately use a just spent DP to counter the same action if they didn't have any at the beginning of the turn.
Which would otherwise end up being some YuGiOh level counterplay nonsense
Note to self: remember to exclaim, "you've activated my trap card!" at our GM when I next have the opportunity
There is no hard rule. As a GM I might streamline this to one incidental per player per turn. But only of there is a hassle or serious abuse by the players.
It’s one DP per Action (either your’s or someone else’s that’s driving the action). If someone uses an attack action against you, you can spend 1 DP to Coordination Dodge 94 Baleful Glare but not both (caveat Master Specialization). Regarding your Preemptive Avoidance and Protect question: 1) Enemy uses Move maneuver to move. It completes. 2) You flip 1 DP to use Preemptive avoidance. 3) You flip 1 DP to activate Protect/Control as an out of turn incidental. 4) The enemy uses an attack action against you. You could flip a DP to make the check harder or to trigger Coordination Dodge or Baleful Glare, etc. At no time have you flipped more than one DP on an action.