Make sure that you only explore the right Shrines:
[Abandoned Shrine] "The hands of men may be guided by faith" +2 dexterity
[Cauldron] Random effect
[Creepy Shrine] "Strength is bolstered by heavenly faith" +2 strength
[Cryptic Shrine] "Arcane power brings destruction" initiates Nova spell
[Divine Shrine] "Drink and be Refreshed"-Restores health/mana,gives full potion of each
[Eerie Shrine] "Knowledge and wisdom at the cost of self"-raise magic,lose mana
[Enchanted Shrine] "Magic is not always what it seems" - lose 1 spell lvl for 1 spell, others gain 1 lvl
[Fascinating Shrine] "Intensity comes at the cost of wisdom" - mana
[Fountain of Tears] no quote is given -1 vitality, +1 strength
[Goat Shrine] Random effect
[Gloomy Shrine] "Those who defend seldom attack" -1 damage to all weapons,+2 to armour items
[Hidden Shrine] "New strength is forged through destruction"
[Holy Shrine] ""- phases you to random location of currently explored level
[Magical Shrine] "While the spirit is vigilant the body shines" - mana shield
[Murkey Pool] no quote is given casts infravision
[Mysterious Shrine] "Some are weakened while one grows strong" - +5 to one attribute, -1 to others
[Purifying Spring] [no quote is given] restores one mana point per drink
[Quiet Shrine] "The essence of life flows from within" +2 vitality
[Religious Shrine] "Time cannot diminish the power of steel" - restores all items to full durability
[Sacred Shrine] "Energy comes at the cost of wisdom" -lose mana permanently
[Secluded Shrine] "The way is made clear when viewed from above" - gives map of current level
[Spiritual Shrine] "Riches abound when least expected" - gives a small amount of gold to each open spot in your inventory.
[Stone Shrine] "Power of mana refocuses renews" - restores charges in staves
[Thaumatology Shrine] "What was once opened is now closed" - re-fills chests on current level
[Weird Shrine] "The sword of justice is quick and sharp" +1 damage to all weapons in inventory