During your questing efforts you will come along various usable dungeon features that you can touch. All features have a random effect unless otherwise noted.
Shrines are one-use items. There exist no shrines that can harm a Hero permanently.
Shrine 
Dark Pool 
Crucified Skeleton
A Shared Effect will affect all team members present in the same dungeon level.
Some are weakened as one grows strong
Will decrease each attribute by one point and give 5 attribute points to distribute.
Crimson and azure in abundance
Will convert all Small Healing and Mana Potions to Full Healing and Full Mana Potions respectively.
The sword of justice is swift and sharp
All Weapons get increased damage for current game. Amount depends on difficulty mode.
Those who defend seldom attack
All equipped Armour items gain Armour Class for current game. Amount depends on difficulty mode.
The powers of mana refocused renews
All charged items are fully recharged.
Time cannot diminish the power of steel
All items are fully repaired.
Magic is not always what it seems to be
All spells may gain a level, but one spell will loose a level.
Strength is bolstered by heavenly faith
Will increase STR by one.
The hands of men maybe guided by faith
Will increase DEX by one.
Knowledge and wisdom at the cost of self
Will increase MAG by one.
The essence of life flows from within
Will increase VIT by one.
Riches abound when least expected
All empty inventory slots will be filled with gold. The amount depends on difficulty mode and dungeon level.
A User Effect will affect only the user of the Shrine
That which can break will
Durability will be halved on one equipped item or all gold in inventory will be lost.*
New strength is forged
All equipped items but one will gain durability.
The power of the mind
Telekinesis or Barrier or Sanctuary will gain an extra level. User will also learn spell if applicable. Spell choice depends on difficulty. If a spell level is awarded, user's MAG will be reduced by 1 point.
The power of healing
Healing or Heal All or Divine Help will gain an extra level. User will also learn spell if applicable. Spell choice depends on difficulty. If a spell level is awarded, user's VIT will be reduced by 1 point.
The power of stone
Stone Curse or Golem or Medusa Gaze will gain an extra level. User will also learn spell if applicable. Spell choice depends on difficulty. If a spell level is awarded, user's DEX will be reduced by 1 point.
The power to travel
Town Portal or Warp or Teleport will gain an extra level. User will also learn spell if applicable. Spell choice depends on difficulty. If a spell level is awarded, user's STR will be reduced by 1 point.
A small reward for heroic deeds
One point is added to each attribute.
Those who are last may yet be first
One point is removed from some attributes.*
That which does not kill you.
Will cast a Sanctuary Spell and give 2 attribute points to distribute.
These Effects will only occur on Single Player mode
You feel stronger / wiser / refreshed / more agile
Adds points to attributes, depending on the time of day.
Knowledge is power
Adds 5 to MAG, but lowers experience points.
Give and you shall receive
Converts all gold to experience points.
What once was opened is now closed
Refills all chest on current level.
The way is made clearer when viewed from above
Reveals map of current level.
Tomes will disappear after being used.
Mysterious Book Will decrease each attribute by one point and give 5 attribute points to distribute. Shared effect
Tome of Perception Will cast Seeing. Shared effect
Tome of Alchemy Will convert all Small Healing and Mana Potions to Full Healing and Mana Potions respectively. Shared effect
Tome of Renewal Will recharge all charged items. Shared effect
Magic Book Will cast Invincibility for user only.
A Fountain will affect only the user. All fountains are reusable.
Cauldron Touch to restore an amount of Mana.
Murky Pool Touch to immediately cast Seeing. Duration is not cumulative.
Circle of Abundance Touch to restore all Life and Mana.
Blood Fountain Touch to restore an amount of Life.
Stands drop items as described. All Stands can be used only once.
Library BooksLibrary books drop a random scroll or spell book.
Bookcase Bookcases drop a random spell book.
Weapon Rack It will drop a random magical weapon.
Armor Stand It will drop a random magical piece of armour.
Storage objects may drop items or gold when searched.
Chests May be trapped.
Barrels May explode or contain monsters.
Pods May explode or contain monsters.
Urns May explode or contain monsters.
Sarcophagi May be trapped or contain monsters.
Decapitated Bodies Although repulsive to search, these objects are otherwise harmless.