[Snake]

It does need a few buffs here and there.

The SAN drain should not have a cap when debuffing the enemy, only when benefiting the Omina. (I.E, Omina should gain LUC, but only up to what SAN dictates now, the enemy should have their LUC drained without a cap.)

The Luck Vaccuum skill should have some extra feature, like stealing an enemy's FP based on your Scaled LUC or/and gain a Trickery effect to dispel an enemy's buffs.
Red Misfortune should make it so the enemy's Hit is reduced by 25 for 1 attack, for 3 rounds.
Yellow Misfortune can stay as is.
Green Misfortune should, on top of making the pitfall, make all enemies inflicted with Luck Drain to have their Status Infliction reduced by 50% for 1 infliction, for 3 rounds.