Today’s Rules Tip written by Eddie Cheung
Cloning/Mimicing your heroic creatures won’t trigger their heroic abilities.
Clones (cards that copy something as they enter the battlefield), such as Progenitor Mimic, don’t target. No matter how hard you try, when you choose a heroic creature with clones such as these, the heroic trigger’s requirements (1. That it’s a spell you cast, 2. That it targets this creature), won’t be satisfied because why? It’s a non-targeting spell! In fact, nothing about copying with Clone or Progenitor Mimic targets anything. It’s just a choice that’s made as the card is entering. A creature spell never targets anything!