Phys Def Down (XC1)

For mechanics in other games, see Phys Def Down.

Phys Def Down
[Active] Auto-attack has (rate)% chance of lowering phys. defence by (value)%.
Element	Electric
Category	Attack
Equips on	Weapons
Max Combined	25%
Sell Price	600 G (Rank I)

Phys Def Down (Japanese: 物理耐性減, Butsuri Taiseigen) is a Gem in Xenoblade Chronicles that is grants a chance that auto-attacks will lower an enemy's Physical Defence, thus increasing the amount of damage that the enemy receives from physical attacks. Since an enemy's physical defence is a percentage, the net result of this gem (and similar debuffs) is to increase the physical damage done to the enemy by a percentage. This gem additively stacks with Shulk's Slit Edge and Dunban's Worldly Slash physical arts.

Gem stats

	Activation Rate	Phys Def Decrease
	10%	2-4%
	12%	6-8%
	16%	10-12%
	20%	14-16%
	25%	18-20%
	30%	22-25%

Gem sources

Ways to obtain Phys Def Down gems, including completing Quests, trading with NPCs, and completing categories in the Collectopaedia.

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	Quest How Do I Feel? Trade Shalen (Eryth Sea, 1*) Kaleka (Alcamoth, 1*)
	Quest Fixing a Broken Door Trade Kaleka (Alcamoth, 5*) Talia (Eryth Sea, 2*)
	Trade Talia (Eryth Sea, 4*)
	None

Crystal and cylinder sources

Places to mine for Phys Def Down crystals, and enemies which drop Phys Def Down Crystals and Cylinders.

	None
	Mining Satorl Marsh (map) - Sororal Statues - E on the statue after climbing the third set of vines Ether Mine B2F (map) - E-most crystal deposit
	Mining Makna Forest (map) - SW of Sap Cave Enemies Proper Bandaz Monta Moramora Lophos Moramora Sparas Pagul Cruz Pagul
	Enemies Splendid Botis Aged Leraje Offensive Security Unit Happiness Flier Caelum Volff
	Enemies Bulganon Nebula Solare Nebula

Unique armour and weapons

Unique Armour and Weapons with Phys Def Down gems permanently attached to them.

	None
	None
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	Weapons Chaos Break Strike Lance Sildra
	None
	None