What an excellent season finale, the third best after 'All Hell Breaks Loose' and 'Kill Billie Vol. 2/Forever Charmed'. The ending was phenomenal, it really was, I mean seeing the Nexus and Zankou blow up was amazing, seeing them in different identities was fun and everyone thinking their dead was a shocker.
When the sisters try to divert Zankou's attention from the Nexus, he hatches an ingenious plan to absorb all of their powers. However, when the girls realize what Zankou is up to, (I mean come on, they're not stupid) they are forced with a life-altering decision: sacrifice their powers or their lives.