Board Thread:Questions and Answers/@comment-24506864-20140218085506/@comment-13275021-20140225034412

BlueBTW, in this situation, he said Armorknight Eagle successfully entered the soul.

In this situation, since Cerberus successfully activated his "Full Fire" ability and paid the cost, Full Fire will resolve after Magical Goodbye/Oops!

Similarly, if you cast Magical Goodbye on Demon Lord, Asmodai after his owner has activated, and paid the cost for, "Dangerous Back-drop!", the ability will still resolve after Magical Goodbye bounces Asmodai back to the owner's hand.