For Challenge # 018. The reminder text for Morph Swap reads ": Reveal ~ and return it to your hand, then put a card with morph from your hand face down on the battlefield. If ~ was blocking or blocked by a creature, the creature it swapped with is now blocking or blocked by that creature."

Okay, I admit, it isn't that practical to expect that much reminder text to appear on any card. I'm just going to assume that, if purple exists, then players already know how to morph and Morph Swap in the same way that players know how to cast creatures and block with them. If that's the case, I suppose we can also go nuts, and assume that if a card was targeting the morph swapping creature, it is now targeting the new morph creature. Sure. Why not.

Bwahaha. Cool mechanic.