ares again appears to her and informed that the reason behind her weakening power was zeus taking back the powers he had granted to her as he left the mortal plane. ares then offered cassie some of his power in exchange for becoming his champion and acknowledging him as her brother. she joins superboy and nightwing up north, with powers returned, to assist in the assault on lex luthor's tower. superboy sacrificed his life to defeat superboy-prime and destroy the tower, and died.