Android17 controls a
Runeclaw Bear with a
Furor of the Bitten on it. He has forgotten about the must-attack clause. In his head he thinks about attacking but chooses not to. He plays a
Cylian Elf and says go. Nappa, before drawing a card, realizes the error and calls a judge.
If we rewind, do we rewind the
Cylian Elf as well because Android17 meant to play it in his post-combat mainphase? Or because Android17 had given no indication to Nappa about when he cast the Elf, and casting the Elf pre-combat is a valid sequence of actions, we rewind to the attack phase with the Elf on the board?