Sam I Am

When Cole realizes that he must eventually give in to evil, he attacks the Charmed Ones in the hope that they will vanquish him forever and end his suffering. Meanwhile, Paige gets her first charge as a Whitelighter and is shocked when the angry, self-pitying man she is supposed to protect turns out to be the father she never knew. Ultimately the sisters come up with a vanquish for Cole and try it, but Phoebe realizes he's trying to commit suicide and doesn't complete it. Cole, now insane, uses the last potion on himself in an attempt at suicide, but despite a massive explosion that destroys his apartment, he's unscathed. Cole is now invincible and unvanquishable.