Rule 725.1
If an Attached card has a Passive or Replacement ability that applies during the process of Attaching or a Triggered ability that triggers off of Attaching, that text exists and can be processed as it Attaches.
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If an Attached card has a Passive or Replacement ability that applies during the process of Attaching or a Triggered ability that triggers off of Attaching, that text exists and can be processed as it Attaches.