Abominational Ritual - swamp ultimate nonbattle – summons abominations in your army
Air Vacuum - elemental complex battle - Makes flying units drop to the ground, thus they can be whacked by melee stacks! doesn't work on large creatures such as nidhoggs!
Alchemy - plain complex nonbattle - enchanment creates gold for plain mana per turn
Alteration - elemental medium battle -
Animal Taming - forest medium battle -
Arcfire – mountain simple battle - 
Blessing of the gods - plain simple battle - 
Brain Leech - swamp medium battle -
Burn Land – mountain medium nonbattle – destroys buildings at target
Call Cavern Crawlers – mountain medium nonbattle – summons cavern crawler in your army
Call Chimeric Magican - plain medium nonbattle – summons chimeric magican in your army
Call Death Knights - swamp complex nonbattle – summons death knights in your army
Call Dream Thieves – elemental simple nonbattle – summons dream thieves in your army
Call Firefly swarm – forest simple nonbattle – summons fireflies in your army
Call Jabberwock - forest ultimate nonbattle – summons jabberwocks in your army
Call Lesser Jabberwock - forest medium nonbattle – summons lesser jabberwock in your army
Call Magmademons - mountain complex nonbattle – summons magmademons in your army
Call Nagas - elemental complex nonbattle – summons nagas in your army
Call Nature - forest medium nonbattle – transforms wilderness into forest nodes
Call of the Forest - forest ultimate nonbattle - enchantment
Call of the wild - mountain complex nonbattle -
Call Sand Worms - plain ultimate nonbattle - summons sand worms in your army
Call Shadow Swarm - elemental ultimate nonbattle - enchantment lasts for 200 turns in which you will recieve ~1k shadows a turn
Call Treeman - forest complex nonbattle – summons treeman in your army
Call Treetop Monkies - forest simple nonbattle – summons treetop monkies in your army
Call Winged Serpent - elemental simple nonbattle – summons winged serpents in your army
Call Winter - elemental medium nonbattle – transforms wilderness into elemental nodes
Candle in the Wind - mountain medium - adds 15 to all your stack's accuracy and decreases all enemy stack's dodge by 10
Charge beast – mountain simple battle
Clear Vegetation - plain medium nonbattle – transforms wilderness into plain nodes
Clockwork Dragons - plain complex nonbattle – summons clockwork dragons in your army
Cockatrices' Song– mountain medium nonbattle – summons cockatrices in your army
Construct Dune Buggies – plain simple nonbattle – summons dune buggies in your army
Construct Ornithopter - plain medium nonbattle - summons ornithopter in your army
Damping Cloud - swamp simple battle - modifies accuracy of all enemy units by -3
Dark Ritual - swamp complex nonbattle - 
Dart of filth - swamp complex battle - 
Desert's Learning Curve - plain ultimate nonbattle - enchantment
Disease Blade - swamp complex battle - gives disease ability to all of your units
Dreadnought of the Desert - plain ultimate nonbattle – summons dreadnoughts in your army
Eagle Eyes - forest medium nonbattle - spies on someone's country(like scrying mirror in AM)
Earthquake - forest complex battle - Removes flying ability from flying units
Elemental Conversion - elemental medium nonbattle – creates gold or items
Entangle - forest simple battle -
Eternal Winter - elemental complex nonbattle – enchantment - transforms a part of target's land into glaciers and destroys another part
Feeble Mind - elemental complex battle - cuts accuracy of 3 random enemy stacks by numbers between 25% and 75%, or the initiative of 2 random enemy stacks by 1
Fire Barrier - mountain complex nonbattle - enchantment
Fireball – mountain medium battle - 
Fireblades - mountain complex battle - 
Flood - forest complex nonbattle - enchantment - destroys land
Flood Land - swamp medium nonbattle – transform wilderness in swamp nodes
Forestking's Strenght - forest complex nonbattle - enchantment gives AP modifier and HP modifier to flora units, dependant on your SL
Free Technocrates - plain medium nonbattle – summons technomancers in your army
Healing - plain simple battle - gives all your units a 10%healing bonus
Hellfire - mountain ultimate battle - 
Holy Power - plain simple battle - kills small number of enemy units 
Incarnate Balrogs – mountain ultimate nonbattle – summons balrogs in your army
Kazi's Armor - forest complex battle - Lowers MRess by 20 on all enemy units
Land Mulding - forest ultimate nonbattle - enchantment gives you 1 land every turn you take, though has a hidden upkeep of 10% of your CURRENT mana
Levitation - elemental ultimate battle - let's all your units fly and gives them a slight bonus to AP too.
Light of the Desert Sun - plain complex nonbattle - enchantment
Lightbringers' Call - plain complex nonbattle – summons Lightbringers in your army
Maggot Infestation - swamp ultimate nonbattle - enchantment
Magnetic Gathering - plain complex nonbattle - summons random non-ultimate white units
Mental drowse - elemental simple battle - 
Mental Quagmire - elemental complex battle - cuts ini of 2 random enemy stacks by 1(can be ini1 and ini2 of one stack) and cuts AP of 2 random enemy stacks(again could be of attack1 and attack2 of 1 stack) by 20%
Mind Blast - elemental simple battle - does Psychic damage to all opponents stacks
Mind Control - elemental medium nonbattle - enchantment increases spell casting ability (not yet confirmed)
Mist of the Swamp - swamp medium nonbattle - enchantment
Mist of winter - elemental simple battle - decreases accuracy of all units by 10%
Motion Logic- +20% AP, +10 accuracy, +10 dodge (affecting all techno units)
Mountain Strength - mountain complex nonbattle - enchanment 
Mud Slide - forest simple battle -
Mud Sling - swamp simple battle - 
Phantom Beasts - elemental ultimate nonbattle – summons phantom beasts in your army
Plague of Doom - swamp ultimate nonbattle - enchantment
Psychic Barrier - elemental medium nonbattle – enchantment creates barriers around your land (huge upkeep!)
Raise Mountain – mountain medium nonbattle – transforms wilderness in mountain nodes
Ranger Sight - forest simple battle - 
Reanimate - plain medium battle - gives all your units a 20%healing bonus
Return of the Magpies - red complex nonbattle - takes a massive ammount of gold from the target, of which about 2 thirds will go to your hands
Shadow Runes - swamp complex battle - adds 10 to 1 of your stack's accuracy and 30 to 1 stack's holy resistance
Stampede - forest complex battle - 
Steam Blast - mountain complex battle - -5 to all enemy's units resistances
Stone Skin – mountain simple battle - adds 6% to all your unit's hp
Summon Behemoths - forest ultimate nonbattle – summons behemoth in your army
Summon Demon Kings - swamp ultimate nonbattle – summons draugh in your army
Summon Giant Pit Spiders - swamp medium nonbattle – summons giant pid spiders in your army
Summon Grizzlybear - forest medium nonbattle – summons grizzlybears in your army
Summon Halwen Wraith - swamp simple nonbattle – summons Halwen wraith in your army
Summon Ice Beasts - elemental ultimate nonbattle – summons ice elementals in your army
Summon Ice Hexes - swamp complex nonbattle – summons ice hexes in your army
Summon Mammoth Maggot – swamp simple nonbattle – summons Mammoth Maggot in your army
Summon Marrow Reapers - swamp medium nonbattle – summons marrow reapers in your army
Summon Mind Bogs - elemental medium nonbattle – summons mind bogs int your army
Summon Mountain Boars – mountain simple nonbattle – summons mautain boars in your army
Summon Mountain Rise – mountain complex nonbattle – summons mountain rise in your army
Summon Nidhogg - mountain ultimate nonbattle – summons nidhoggs in your army
Summon Psychic Beholder - elemental medium nonbattle – summons psychic beholders in your army
Summon Roxes - forest medium nonbattle – summons roxes in your army
Summon Salamanders – mountain medium spell – summons salamanders in your army
Summon Swamp Fiends – swamp medium nonbattle – summons swamp fiends in your army
Summon Wendigo - forest complex – summons wendigos in your army
Summon Werewolves – mountain simple nonbattle – summons werewolves in your army
Summon Wrathwinds- elemental medium nonbattle – summons wrathwinds in your army
Swamp Call - swamp complex nonbattle – summons a random swamp unit in your army (none ultimate)
Swamp Plague - swamp complex nonbattle - enchantment - kills pop
The Flayers Incarnation - elemental complex nonbattle – summons flayers in your army
Ultimate Reanimate - plain ultimate battle - 
Unstable Mutation - elemental complex battle - 
Vampirism - swamp medium battle - gives 2 of your stacks the ability Life Steal
Venom Spray - swamp simple battle - 
Whistle of the War Falcon - plain simple nonbattle – summons war falcons in your army
Wooden Skin - forest simple battle - increases Melee, Holy, Ranged and either Poison or Psychic resistances by 10-15 points on a single random unit

Mountain: 
27 spells (7s/7m/9c/4u)
Swamp:
26 spells (7s/7m/8c/4u)
Can reserearch plain medium, forrest medium, elemental complex, mountain complex
Elemental:
25 spells (5s/8m/8c/4u)
Plain:
20 spells (5s/5m/6c/4u)
Can research swamp medium, mountain medium, elemental complex, forrest complex
Forrest:
23 Spells (6s/6m/7c/4u)

    Source: geocities.com/gotr_mardrax