Arc Lightning (Yellow)

Aurora Specialization

Whenever you go again this turn, deal 1 arcane damage to any target.

The next action card you play this turn gets go again.

Go again

Rulings

From the Rosetta + 1st Strike release notes

Arc Lightning’s first ability generates a triggered effect that triggers every time “go again” on an object is resolved that turn (e.g. resolving a card or activated ability with go again). Specifically, you must gain the action point from resolving go again to trigger this effect.
“Go again” on non-attack actions on the stack will resolve after all other resolution abilities have resolved. “Go again” on attacks on the active chain link will resolve first in the link step, after both damage and resolution steps of the active chain link have passed.
An object cannot have more than one “go again” ability. If an effect would give the “go again” ability to an object that already has the “go again” ability, then that part of the effect fails.
Gaining an action point can only happen on your turn during your action phase. If you resolve a card or activated ability that has a “go again” ability on your opponent’s turn, “go again” will fail to resolve and you will not trigger Arc Lightning as you are unable to gain action points on your opponent’s turns.
When resolving Arc Lightning’s card on the stack, all effects will be generated in the order written on the card. This means the ”go again” on Arc Lightning’s card will trigger its own triggered effect that it generated for the turn.
Arc Lightning is considered the source of the damage dealt.

Keyword notes

Go again - Go again allows multiple actions to be played in a turn when usually playing an action with use up your action point, and therefore end your turn. A card with go again gives the controller of that card or activated ability 1 action point when it resolves.

When an action with go again resolves, its controller gains 1 action point.
Multiple instances of go again on the same card or activated ability do not stack. If a card or activated ability has multiple instances of go again when it resolves its controller gains 1 action point only.
If an action with go again does not resolve, its controller does not gain 1 action point.
You cannot reveal a card with no to Belittle. The card must have a value to its power that is 3 or less. (0 is a value)