What happens when a card requires you to discard but you have no cards in hand?

Ruling: When a card instructs you to discard but you have no cards in hand, you do as much as you can and then continue with the rest of the effect.

Sequence:

• Attempt to discard (if you have no cards, you discard nothing)
• Continue with any remaining effects on the card

Nuances:

• Cards with "discard TO" wording (like Rocket) require the discard to happen in order to get the effect, unlike standard discard instructions