Runes

Secondary Skills
Air Magic
Archery
Armorer
Artillery
Ballistics
Diplomacy
Eagle Eye
Earth Magic
Estates
Fire Magic
First Aid
Intelligence
Interference
Leadership
Learning
Logistics
Luck
Mysticism
Navigation
Necromancy
Offense
Pathfinding
Resistance
Runes
Scholar
Scouting
Sorcery
Tactics
Water Magic
Wisdom

Runes
	Basic: allows the hero's units to accumulate up to 3 Rune Levels in combat. Each Rune Level gives bonuses to their creatures' stats: 1: +2 Attack, 2: +2 Defense, 3: +1 Speed.
	Advanced: allows the hero's units to accumulate up to 6 Rune Levels in combat. Each Rune Level gives bonuses to their creatures' stats: 1: +2 Attack, 2: +2 Defense, 3: +1 Speed. 4: +2 Attack, 5: +2 Defense, 6: +1 Speed.
	Expert: allows the hero's units to accumulate up to 9 Rune Levels in combat. Each Rune Level gives bonuses to their creatures' stats: 1: +2 Attack, 2: +2 Defense, 3: +1 Speed. 4: +2 Attack, 5: +2 Defense, 6: +1 Speed. 7: +2 Attack, 8: +2 Defense, 9: +1 Speed.

The bonuses of all achieved Rune Levels are cumulative. The unit gains +1 Rune Level when it attacks; +2 Rune Levels when it takes damage; +3 Rune Levels when it takes a defensive stance.

All classes may learn Runes from a Bulwark's Sieidi of the Runes if they have any level of Scholar.

Only  Chieftains and  Elders may learn Runes without Scholar.

Related factors:

•  Yeti Runemaster: Always benefits from the effects of Expert Runes; if the hero has the Runes skill, its effect is added to the Yeti Runemasters' inherent Runes effect (up to +12/+12/+6 Attack/Defense/Speed respectively at 9 Rune Levels).

Chance to get

Out of total 112 for The Shadow of Death, and of (112 + Interference chance + Runes chance) for Horn of the Abyss .
Banned skills change the probability.

Town	Class	Chance to learn
Castle	Knight	0
Castle	Cleric	0
Rampart	Ranger	0
Rampart	Druid	0
Tower	Alchemist	0
Tower	Wizard	0
Inferno	Demoniac	0
Inferno	Heretic	0
Necropolis	Death Knight	0
Necropolis	Necromancer	0
Dungeon	Overlord	0
Dungeon	Warlock	0
Stronghold	Barbarian	0
Stronghold	Battle Mage	0
Fortress	Beastmaster	0
Fortress	Witch	0
Conflux	Planeswalker	0
Conflux	Elementalist	0
Cove	Captain	0
Cove	Navigator	0
Factory	Mercenary	0
Factory	Artificer	0
Bulwark	Chieftain	4
Bulwark	Elder	4

See also:

• Secondary skills