quipment that a guardian can use:
Weapons: Club, Longsword, Warhammer, Battleaxe, Spear, Polearm
Armor: Chain Mail, Plate Mail
Charms: Wild Heal, Heal, Focused Heal
just choose the items you like from above:
i would use:
weap: HM ( good add max mana, int)
armor: HM (good add max mana, int, ee)
charm: ee (good add max mana int, hm)
as guardian you should tank enought because u skill INT for maxmana and healdmg
1 int ~ 1ee for armor if I remember correctly

if yous till got problems with tank use an ee armor with hm/max mana or int

1hm ~ 2int for healer
int = Intelligence
hm = Heal Mastery
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+ % Heal Mastery Increases the effectiveness of any healing charms you use by the % listed. At the time of this writing, the stats visible on the heal charm will not change, however.
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+ % Enhanced Effect Also Known As EE, this increases the base stat of the item by the percent listed.
Weapons = More Damage, Armors = More Defense, Charms = More Power, Glyph = More Duration
remember, the bump rule is 24 h in this forum!