@JeremyECrawford Does a wizard retains all his casting abilities, class features, feats; after casting True Polymorph (Planetar) on himself?
— Shun Tseng (@Shun_Tseng) January 12, 2017
True polymorph replaces the game statistics of the target with those of the new creature. The target's features don't carry over. #DnD https://t.co/1es5o1vD6l
— Jeremy Crawford (@JeremyECrawford) January 14, 2017