Poison Plus

Poison Plus
[Passive] Increases Poison damage dealt by (value)%.
Element	Earth
Category	Attack
Equips on	Weapons
Max Combined	100%
Sell Price	1,000 G (Rank I)

Poison Plus (Japanese: 毒強化, Doku Kyōka) is a Gem in Xenoblade Chronicles that increases Poison damage dealt to enemies.

Gem stats

	Poison Dmg Increase
Rank I	5-10%
Rank II	15-20%
Rank III	25-30%
Rank IV	35-40%
Rank V	45-50%
Rank VI	75-100%

Gem sources

Ways to obtain Poison Plus gems, including completing Quests, trading with NPCs, and completing categories in the Collectopaedia.

Rank I	None
Rank II	Trade Modamo (Frontier Village, 2*) Dabidabi (Frontier Village, 2*) (Only if Adidi was given the Enlarging Seaweed during the quest Who is Bigger?.)
Rank III	Quest Dadapon in Trouble Trade Dedeba (Frontier Village, 4*) Modamo (Frontier Village, 4*) Nelo (Alcamoth, 2*) Dabidabi (Frontier Village, 4*) (Only if Adidi was given the Enlarging Seaweed during the quest Who is Bigger?.)
Rank IV	Trade Nelo (Alcamoth, 5*)
Rank V	Quest Legend of the Sage
Rank VI	None

Crystal and cylinder sources

Places to mine for Poison Plus crystals, and enemies which drop Poison Plus Crystals and Cylinders.

Rank I Rank I	None
Rank II Rank II	None
Rank III Rank III	Mining Makna Forest (map) - E of Eks Watering Hole and NW of Twisted Tree Gate Galahad Fortress B2F (map) - Ether Blast Furnace NW Ether Gear Enemy Eques Skyray
Rank IV Rank IV	Enemies Mild Florence M57/FAITH M56/UNION M57/BEAST
Rank V Rank V	Mining Tephra Cave GF (map) - in Forgotten Cave

Unique armour and weapons

Unique Armour and Weapons with Poison Plus gems permanently attached to them.

Rank I	None
Rank II	None
Rank III	Weapons Longevity Biter Machina Rod II
Rank IV	None
Rank V	Weapons Banquet Biter High Entia Soul
Rank VI	None