Board Thread:General Discussion/@comment-1031724-20160910010255/@comment-1031724-20170801162448

Princess Cadance said he would not return, he was shattered to pieces from which he did not reappear to attack the Crystal Empire again, and Meghan McCarthy pronounced him dead.

The comics, which are official but from different writers not affiliated with DHX, depicted his return as a ghost tied to his horn, and later his resurrection. Season 7 will likely see Chrysalis or someone else resurrect him as well. Then Season 8 will probably keep up this pattern and debunk my damnation headcanon for Tirek by having Chrysalis break him out as well, then Season 9 will see the three of them form a terrible trio.