[Snake]

This is not really very good for what it does, in both damage and poison chance, and I believe it can be made better by a large margin with a simple change.

Flame Art (Poison)

Flame Art trait (only 1 can be selected). This Salamandra's flames have gained the oddity of the wyvern. Fire damage that deals at least 50 damage have a chance to inflict Poison LV X (X = Character LV/4) for 2 rounds.

If the target is already Poisoned or Burning, the effect will instead corrode them, dealing bonus Acid magic damage equal to the Poison LV (or Burn LV, whichever is higher) + Acid ATK, which ignores armor.

This effect has a 1 round cooldown.

For 3 rounds of cooldown that doesn't prevent them from reapplying any buffs, this is also pretty unusable. So, to justify the cooldown, this could work better:

Flame Art (Purification)

Flame Art trait (only 1 can be selected). The flames of the Salamandra purify magic it touches. Salamandra Flame will also replace 1 random stealable beneficial status effect from the target with Burn LV X (X = Character LV/2 + Scaled SAN + 50% Fire ATK) for 2 rounds, and disable absorb, reflect and immunity to Fire damage as a sub-status of Burn.

The effect puts Salamandra Flame a 3 round cooldown, but if the target has no eligible beneficial status, this effect will not activate and no cooldown will be applied.