Paige: Five magic crystals oriented east to west. Magic circle, check.
Piper: Oh, purple good, purple equals exploding power. Exploding power, check.
Phoebe: One fabulously written Source vanquishing spell, check.
Cole: Don't get cocky.
Phoebe: Not cocky, confident.
Piper: We are talking about the Source of all evil, maybe measured optimism is best.