Amulet of Echoes (Blue)

Go again

Instant - Destroy this: Target hero discards 2 cards. Activate this only if they have played 2 or more cards with the same name this turn.

Rulings

From the Everfest release notes

Amulet of Echoes checks only for the same name. Cards with different color strips still count as cards with the same name.
The targeted hero can respond to the activation of Amulet of Echoes and play cards from their hand before they must discard.
You cannot defend with Amulet of Echoes as it has no defense property. (This is different than if it had a defense value of 0.)
You can target any player, including yourself.

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)