Hobbies And Interests
Degenerator Trap
Locate one of the maps that has a Degenerator Trap, Deep Dungeon, Dolbodor Swamp, Fovoham Plains or Zeklaus Desert. Bring four math-skill characters and one battle-skill character. Use your math-skill characters to petrify and destroy every enemy except one on the map, then use the battle-skill character to whittle the last enemy to low health. Petrify them, then activate the trap with a character you want to level-down. Step off the trap tile, then step back on to reactivate it. This will take a long time but is a reliable way of activating the trap.
Teleporting
To use the teleporting trick, follow the steps from the Degenerator Trap trick, except equip "Teleport" as any character's movement skill. Teleport on the trap to activate, then teleport off and teleport back to reactivate. This method ultimately takes fewer turns but has a chance of failing to activate the trap.
Mindflares
For characters who can learn the "monster skill" trick, go to a map with Mindflares on it, then cast "Slow" or "Stop" on the Mindflare, move the monster-skill character (usually a Beastmaster) within the proximity of Mindflare, then have that character use the monster-skill "Level Blast" on him/herself to level-down quickly.
Other Tips
All ally characters should have "Slow" cast on them, and all characters leveling-down should have "Haste" cast on them so they will take priority and appear to have multiple turns in a row to step on and off the trap. Enemies can be disabled in a number of ways, including "Petrify," but casting "Daze" and "Frog" on enemies turns them into confused frogs, which not only makes them harmless but inert. "Flare" can be cast to end the fight quickly after all allies have been leveled-down.