https://en-wiki.metin2.gamefor…hp/Claw_Poison_Spider_SD2
As you can see the effective bonuses are 'strong against insects', 'fire resistance' and power of fire
Insects can be achieved from Talismans (max 30%)
Fire resistance can be achieved from armour, helmet and bracelet (max 15% each), aswell from costumes
Power of fire from Fire talisman
Furthermore you can increase regular defence