Xael said:
Mage armor provides +4 armor bonus.
Mithral shirt provides +4? armor bonus.
Bracers of armor provide +X armor bonus.
Ring of protection provides +X deflection bonus.
Amulet of natural armor provides +X natural armor bonus.
Same kind of bonuses do not stack (exept dodge bonuses). Mithral shirt (or mage armor, or bracers of armor) would stack with ring and amulet.
Providing AC4 is AD&D...
Ok. I'm working on it. See some stats below.
So. My Various options that I can choose to wear depending on need are:
Option1: AC15=Base AC(10), Bracers (+1), Dex (+2), Ring (+1), Amulet (+1)
Option2: AC18=Base AC(10), Mage Armor (+4), Dex (+2), Ring (+1), Amulet (+1)
Option3: AC20=Base AC(10), Mithral (+6), Dex (+2), Ring (+1), Amulet (+1)
That looks to agree with what you stated above.
Reference information (from PCGEN5, based on DMG rules):
The "mithral shirt" on
Beleril is actually...
Chain Shirt +1 (Mithral/Deflection Bonus (+1)) AC6
TYPE:MAGIC.ARMOR.LIGHT.SUIT.METAL.SPECIFIC.CUSTOM.MITHRAL.MASTERWORK
PROFICIENT:Y
Properties:COMBAT|AC|4|TYPE=Armor.REPLACE, COMBAT|AC|1|TYPE=Armor.REPLACE, COMBAT|AC|+1|TYPE=Deflection|(Chain Shirt +1 (Mithral/Deflection Bonus (+1))), grants a Deflection bonus to armor class
WT:10.0
MAXDEX:6 ACP:0 ASF:10 Move:30,20 Size:M
SOURCE:Custom - Wizards of the Coast - Core Rulebook II - DMG, Chap.8, Magic Item Descriptions, Armor
Cost: 4250
The "mithral shirt" on
Kurik is actually...
Chain Shirt +1 (Mithral) AC5
TYPE:MAGIC.ARMOR.LIGHT.SUIT.METAL.SPECIFIC.CUSTOM.MITHRAL.MASTERWORK
PROFICIENT:Y
Properties:COMBAT|AC|4|TYPE=Armor.REPLACE, COMBAT|AC|1|TYPE=Armor.REPLACE
WT:10.0
MAXDEX:6 ACP:0 ASF:10 Move:30,20 Size:M
SOURCE:Custom - Wizards of the Coast - Core Rulebook II - DMG, Chap.8, Magic Item Descriptions, Armor
Cost: 2250