Stellar Glide (Blue)

Red Yellow Blue

When this attacks, you may destroy a Lightning Flow you control. If you do, this gets go again.

Rulings

From the Omens of the Third Age release notes

Stellar Glide triggers when it resolves on the stack and becomes an attacking card on the combat chain. This triggered effect is an optional effect: you choose whether or not to destroy a Lightning Flow you control when this triggered effect resolves. If you destroy a Lightning Flow you control this way, Stellar Glide gets go again.

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)