Rare spells are the 21st through 30th spells of each Magical Realm. Most Rare Spells exemplify the realm they belong to, and will often play very well to that realm's strengths. There are fewer Rare Fantastic Units than there are in any of the other rarity categories; instead there is a much stronger selection of Enchantments, Curses, and Instant Spells here. Most Rare Spells provide either a surprisingly-strong benefit for a relatively-high cost, or an above-average benefit for a relatively low cost. During the middle- and late-game, Rare Spells tend to be cast very often, Mana permitting.
A wizard needs at least 2 Spellbooks in a Magical Realm to be able to research any Rare spells at all. The exact number of Rare spells available for research increases with the number of Spellbooks acquired. The exact spells available for research are randomly selected. With 10 or more spellbooks in a single realm, a wizard will be able to research all Rare spells of that realm. Rare spells require 880 to 1,700 to learn.
With 11 Spellbooks in a single realm, a wizard can pick 1 Rare spell from that realm which will be available as soon as the game begins.
|880||Elemental Armor||Warp Lightning||Lionheart||Wraith Form||Disjunction True|
|1040||Stone Giant||Chaos Spawn||Invulnerability||Evil Presence||Wind Walking|
|1120||Iron Skin||Doom Bolt||Righteousness||Wraiths||Banish|
|1200||Ice Storm||Magic Vortex||Prosperity||Cloud of Shadow||Storm Giant|
|1300||Earthquake||Efreet||Altar of Battle||Warp Node||Air Elemental|
|1400||Gorgons||Fire Storm||Angel||Black Wind||Mind Storm|
|1500||Move Fortress||Warp Reality||Stream of Life||Zombie Mastery||Stasis|
|1600||Gaia's Blessing||Flame Strike||Mass Healing||Famine||Magic Immunity|
|1700||Earth Elemental||Chaos Rift||Holy Word||Cursed Lands||Haste|