Cold Snap (Yellow)

Target hero may pay

. If they don't, freeze a card in their arsenal or an ally they control until the start of your next turn.

If this was played from arsenal, draw a card.

Go again

Rulings

From the Uprising release notes

If the target hero has no cards in arsenal arsenal and does not control an ally they can still elect to not pay resources.
The target hero chooses if they are paying the resources first. You do not choose what you are freezing until they choose not to pay.

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)