Aether Quickening (Yellow)

Red Yellow Blue

Deal 3 arcane damage to target hero.

Surge - If this deals more than 3 damage, it gets go again.

Rulings

From the Dynasty release notes

You must deal more than that much damage (after prevention effects have been applied) for the surge condition to be met.
The surge effect is not a triggered effect. There is no priority between dealing damage and the surge effect resolving.

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)