Ask a Magician Thread.

Um

Paralyze = 1292% dps + 160% @ 100% mastery poison, 350% range, 5 second stun, allows free tele casting, damage reduction on multiple mobs.
Big Bang = 1264% dps, 200% range on either side, no stun, requires charge up, cannot be freely telecasted.

Big Bang should be more useful at Lionheart Castle where mobs don't die in 2 hits, but Paralyze is definitely more useful on single targets and for other training areas. Fire Demon isn't all that useful anymore since Paralyze mobs, unless you need a fire weakness to 1hko with Big Bang.

Paralyze does 620% @ 810ms + 160%/s DoT.
Big Bang does 290%x5 @ 810ms + <1000ms charge.
Paralyze: 765%/s + 160%/s DoT
Big Bang: 801%/s and I'm fairly confident they reduced the charge time for Big Bang to something like 600ms, unless they reraised it in Big Bang.

My point was that Paralyze's base DPS was lower than Big Bang; once you've gotten the stun and DoT off, Big Bang is better for DPS.