A system has been added that will automatically add divination cards and other items to the item acquisition sections where appropriate. Entries added by this system will be shown as automatic in the item acquisition section.
Some pages will need to be updated to include
upgraded_from_disabled=true if they are not eligible for the system.
Some further details on what needs to be done can be found on Path of Exile Wiki:To-do list/Automatic upgraded from and issues can be posted on the talk page.
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+4% Chance to Block Spell Damage while holding a Shield
40% increased Defences from Equipped Shield
+8% Chance to Block Projectile Attack Damage 
Deflection is a notable passive skill that grants additional chance to block with a shield equipped. It also grants increased armour rating, evasion rating, and energy shield from equipped shields.
- Mark_GGG (March 13, 2013). "Increased Shield Defenses?". Official Path of Exile Forums. Retrieved July 19, 2013.