Beaten Trackers

Whenever you discard a random card with 6 or more

, you may destroy this. If you do, gain 1 action point.

Battleworn

Rulings

From the Dynasty release notes

If you would discard a card with 6 or more as an additional cost to play an action card, you may choose to destroy Beaten Trackers and gain the action point after the card is played – you can not use the action point gained to pay for that card.
The triggered effect is optional, and the decision to destroy Beaten Trackers is made when the triggered-layer resolves on the stack.
There is no priority between deciding to destroy Beaten Trackers and gaining an action point.
You can only gain action points when you are the turn player. If you trigger Beaten Trackers on an opponents turn, you do not gain action points.

Keyword notes

Battleworn - Equipment that wear down after each time they are used to defend. If you defend with a card with Battleworn, put a -1{d} counter on it when the combat chain closes.

When you defend with a card it remains on the combat chain until the chain closes, therefore you cannot defend with an equipment multiple times on the same combat chain.
A -1 counter stays on the card until the card is destroyed or the game ends.
If the defense of a card that is defending is below zero, its defense value is considered to be zero.
When this card is destroyed, it is sent to your graveyard. (Not when it has 0)
When this card is destroyed, it is sent to your graveyard.
If the defense of a card that is defending is below zero, calculate as if its defense is zero.