Magic Shield - Dark Souls

Magic Shield
Spell Type	Sorcery
	10
Slots Used	1
Spell Uses	5

Magic Shield is a Sorcery in Dark Souls. To cast a sorcery, you must use a Catalyst or Special Weapons that can cast Sorceries. 

Sorcery for casters who wield swords. Magic augmentation: left shield.
Shields augmented by magic are resistant to magic attacks and have higher stability. This spell makes it possible to challenge powerful foes with a small shield.

Usage

• Support, Shield
• Duration: 15 seconds
• Reinforces the equipped shield or weapon able to block in the left hand with magic. Works on all types of shields (even unique or upgraded to any path) and on all weapons able to block while on the left hand (even unique or upgraded to any path).
• Halves stamina used on hit deflection (only on shields) and improves the shield's magic resistance by 30% (by up to a maximum of 90%).

Acquired From

• Griggs of Vinheim
• Big Hat Logan

Notes

• Blocked Magic attacks' damage are reduced by an extra 30% (maximum magic resistance being 90%).
• Unequipping the shield, or letting the spell run out, cancels this effect.
• Seems to roughly halve the stamina used to block an attack (tested on heater shield).
• Does not raise damage when used on weapons on the left hand.