Venom Bite
Tornado Bash
Lead Unit
Flurry Strength +20%
Force Strike +50%
Stormlashed Punisher +25%
Poisoned Punisher +25%
(Manacaster) Critical Rate +12%
Skill Damage +20%
2nd Unit
HP 70% = Critical Damage +22%
(Dagger) Critical Rate +12%
3rd Unit
Poisoned Punisher +30%
(Blade) Critical Rate +12%
Sword's Psalm III
4th Unit
Skill Haste +8%
HP 70% = Strength +13%
Wind Res +10%
Buff Skill Time +20%
Bow's Psalm III
Impregnable Fortress III
It's not 100% stable (about 90%), but it's quick and easy. So you can use it when you want to collect items quickly.