Rule 359.3.b
If there are other Pending Items on the Chain, then the controller of those Pending Items completes Steps 2 through 5 of Playing Cards for those items before continuing. See rule 327. Chains for more information.
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If there are other Pending Items on the Chain, then the controller of those Pending Items completes Steps 2 through 5 of Playing Cards for those items before continuing. See rule 327. Chains for more information.