Amulet of Ice (Blue)

Go again

Instant - Destroy this: Target hero discards a card unless they pay

. Activate this only if you've Ice fused this turn.

Rulings

From the Tales of Aria release notes

You cannot defend with Amulet of Ice as it does not have a defense value.
You may use this on your opponent’s turn as long as you have Ice fused.
You may elect to discard a card even if you have no cards in your hand. You are not forced to pay the .

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)