Amulet of Ignition (Yellow)

Go again

Instant - Destroy this: The next ability you activate this turn costs

less to activate. Activate this only if you haven't played a card or activated an ability this turn.

Rulings

From the Everfest release notes

Amulet of Ignition affects the next activation once. The same ability used again will not have the same cost reduction from Amulet of Ignition.
You cannot defend with Amulet of Ignition as it has no defense property. (This is different than if it had a defense value of 0.)

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)