Restless Bones (Red)

When this attacks, you may discard a card or destroy the top card of your deck. If that card has watery grave, this gets go again.

Rulings

From the High Seas release notes · June 6 2025

Restless Bones triggers when it resolves and becomes an attacking card. This is an optional effect: You choose whether to either discard a card from your hand, destroy the top card of your deck, or do neither at the time the triggered effect resolves. If you either discard a card or destroy the top card of your deck this way and that card has watery grave, Restless Bones gets go again.
Destroying the top card of your deck will not trigger any “when this is destroyed,…” effects unless it is specified by the ability’s triggering condition.
Destroying the top card of your deck will not satisfy any condition nor trigger any effects that look at whether you’ve destroyed an object you control (e.g. Merciful Retribution, Ratchet Up) as you do not control the cards in your deck.

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)