Wisdom
| Wisdom | ||
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Basic Wisdom: allows your hero to learn third level spells. | |
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Advanced Wisdom: allows your hero to learn fourth level spells. | |
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Expert Wisdom: allows your hero to learn fifth level spells. | |
Wisdom is a secondary skill that enables hero to learn 3rd, 4th and 5th level spells depending on the level of the skill. Heroes without Wisdom skill can learn 1st and 2nd level spells. Basic Wisdom enables hero to learn 3rd level spells, Advanced Wisdom enables to learn 4th level spells and Expert Wisdom enables to learn 5th level spells.
As opposed to what the manual states, Wisdom is not required to cast third or higher level spells, only to learn them. For example Solmyr has 4th level spell (Chain Lightning) but he is still able to cast it without Advanced Wisdom. Also spell scrolls and Tomes of Air, Earth, Fire and Water enables hero to cast any level of spell regardless of their level of Wisdom skill.
Wisdom will be offered at level 6 for Might heroes and Elementalists, and at level 3 for Magic heroes (exept Elementalists) if it was not offered before and the hero does not know Wisdom yet. In case Wisdom was declined, it will be offered again from whenever it was offered at most 6 levels later for Might heroes and Elementalists, and at most 3 levels later for Magic heroes (except Elementalists). In HotA 
numbers for Elementalist class were changed to match the numbers for Magic oriented heroes.
Heroes with Wisdom as a starting skill:
All Clerics, Druids, Wizards, Heretics, Warlocks, Battle Mages, Witches and Elementalists (and Navigators ) start with basic Wisdom. Additionally, the following heroes start with advanced wisdom:
Adelaide the Cleric
Astral the Wizard-
Dracon the Wizard 
Jeddite the Warlock
Mirlanda the Witch
Uland the Druid (not in HotA )
Additionally, the following heroes also start with basic wisdom:
Aislinn the Necromancer
Rashka the Demoniac
Chance to get
Out of total 112 for Shadow of Death, and of (112 + Interference chance) for Horn of the Abyss .
Banned skills change the probability.
| Town | Class | Chance to learn |
|---|---|---|
 Castle |
Knight | 3 |
| Castle |
Cleric | 7 |
 Rampart |
Ranger | 3 |
| Rampart |
Druid | 8 |
 Tower |
Alchemist | 6 |
| Tower |
Wizard | 10 (highest) |
 Inferno |
Demoniac | 4 |
| Inferno |
Heretic | 8 |
 Necropolis |
Death Knight | 6 |
| Necropolis |
Necromancer | 8 |
 Dungeon |
Overlord | 3 |
| Dungeon |
Warlock | 10 (highest) |
 Stronghold |
Barbarian | 2 (lowest) 
|
| Stronghold |
Battle Mage | 6 |
 Fortress |
Beastmaster | 2 (lowest)
|
| Fortress |
Witch | 8 |
 Conflux |
Planeswalker | 2 (lowest)
|
| Conflux |
Elementalist | 8 |
 Cove |
Captain | 1 (lowest)
|
| Cove |
Navigator | 8 |
 Factory |
Mercenary | {{{21}}} |
| Factory |
Artificer | {{{22}}} |
|}
User commentary
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Wisdom is perhaps the most essential Heroes 3 secondary skill. It should be learned by every hero and, when offered on basic level, never rejected (one may decline advanced or expert wisdom, if there is an extremely useful basic secondary skill proposed). Possibly except are those ones who are in a deep reserve, and whose job is just to summon troops from adventure map dwellings and collect weekly resources; however, in case of an unexpected battle they should be able, for example, to destroy significant part of enemy's troops with Armageddon, to get quickly to a town via Town Portal, and/or to resurrect/animate units killed by enemy. In general, expert wisdom is not always a must (while Dimension Door, Fly, and Implosion are extremely mighty), but advanced wisdom is very important since abovementioned 4 level spells are not only powerful, they can change the whole gameplay, and Chain Lightning, Clone, and Berserk are also very powerful. 4th level of Mage Guild is arguably the best in the game. Moreover, it is the highest level of spells which can be learned by Eagle Eye, Scholar, or in a Shrine (the latter can provide 4th-level spells only in Things that ruin Wisdom |