336.1. The newest item on the Chain resolves. Execute its game effects in their entirety. See rule 346. Playing Cards for more information on resolving spells. See rule 386. Playing or Activating Abilities for more information on resolving abilities.
336.2. If the Chain is empty, play proceeds in an Open State.
336.3. If the Chain is not empty and there are one or more Pending Items , return to Step 1: Finalize.
336.4. If the Chain is not empty and there are no Pending Items , the controller of the newest item on the chain gains Priority and becomes the Active Player. Return to Step 2: Execute.