Frontline Scout (Yellow)

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When this attacks, you may look at the defending hero's hand.

If this was played from arsenal, it gets go again.

Rulings

From the Monarch release notes

You look at the defending hero’s hand when Frontline Scout effects resolves. (The ability goes on the chain when the card becomes an attack on the chain.)
If this attack does not resolve (For example it is attacking an aura with spectra) then you do not look at the defending hero’s hand. (You would also not gain the action point from 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)