How do you do 100000 damage on epic battle fantasy 3

You need to have Lance's limit break ready. Equip Lance with Mage Hat, Red Jacket, and Steel Shark for magic attack bonus. (Note: Red Vulcan gun does *not* appear to help Nuke). Go back to town and engage the newbie bushes in the first forest zone. They are weak so they receive high damage, plus they are fire vulnerable. At this point Lance's Nuke will hit for fairly close to 100K damage, and easily over 100k if you get lucky with a critical hit. If Natalie casts Bless on Lance this should push your damage over 100k. For an even bigger bonus have Matt toss a Milk to Lance to get the 70% magic attack bonus, have Natalie cast Kyun limit break to give the enemy -50% magic resistance, and then have Lance cast Nuke. Using that triple combo I got a critical hit for over a half million damage.