Chains of Eminence (Red)

Go again

When this enters the arena, name a card. The named card can't be pitched, played, or defend while this is in the arena.

At the beginning of your action phase, destroy this.

Rulings

From the Arcane Rising release notes

You name the card when the ability resolves. Players can respond to Chains of Eminence being played, but not after the card has been named.
You may still put the named card in your arsenal or reveal it to pay additional costs.
Auras stay in the arena until they are destroyed.

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)