Originally Posted by
TooSoon
Sure. V could have an invisible metamagic rod, or an obscure feat, of the same varieties mentioned in the FAQ about Xykon. I chose this hypothetical because it's an apples to apples comparison, unlike other analogous situations (eg Roy/Miko attacks per round, etc). If V would be considered level 17 based on this, shouldn't Xykon be considered 27+?
My view would be 27+ is the most straightforward level for Xykon. The most straightforward, balance of probabilities assumption under Occam's razor being that they used higher slots to cast higher spells.
Since I answered your question, can you please do the same for mine? If V did this next panel, would you personally advocate him being level 17?