Ok this will be poorly formatted but here's my work in progress (perhaps a "Rejuvenate Land" spell to counter this):
Scorched Earth Spell:
Level 1
<SpellDef InternalName="ScorchedEarth1">
<DisplayName>Scorched Earth I</DisplayName>
<Description>Burn the house to the ground.</Description>
<Image>ReviveLand_Painting.png</Image>
<IconFG>S_BirthOfSummer_Icon.png</IconFG>
<IconColor>153,110,71</IconColor>
<SpellBookSortCategory>World</SpellBookSortCategory>
<SpellBookSortSubCategory>Map</SpellBookSortSubCategory>
<SpellType>Strategic</SpellType>
<SpellClass>Terraform</SpellClass>
<SpellSubClass>Other</SpellSubClass>
<SpellTargetType>NeutralGround</SpellTargetType>
<AutoUnlock>1</AutoUnlock>
<Radius>1</Radius>
<Prereq>
<Type>AbilityBonusOption</Type>
<Attribute>Fire2</Attribute>
</Prereq>
<SpellResourceCost>
<Resource>Mana</Resource>
<Amount>100</Amount>
</SpellResourceCost>
<GameModifier>
<ModType>Map</ModType>
<Attribute>PlaceEnvironment</Attribute>
<TerrainType>BarrenEnvironment</TerrainType>
</GameModifier>
<ValidTerrainCategory>Forest</ValidTerrainCategory>
<ValidTerrainCategory>Land</ValidTerrainCategory>
<AIData AIPersonality="AI_General">
<AIPriority>0</AIPriority>
</AIData>
<HitSoundFX>Spell_BirthOfSummer_01</HitSoundFX>
<SpellDefEffect>
<EffectName>Revive_Land</EffectName>
<LocalPosition>0,0,0</LocalPosition>
<EffectScale>1</EffectScale>
<EffectDelay>0</EffectDelay>
<SnapToTerrain>1</SnapToTerrain>
</SpellDefEffect>
</SpellDef>
Level 2
<SpellDef InternalName="ScorchedEarth2">
<DisplayName>Scorched Earth II</DisplayName>
<Description>Burn the farm to the ground.</Description>
<Image>ReviveLand_Painting.png</Image>
<IconFG>S_BirthOfSummer_Icon.png</IconFG>
<IconColor>153,110,71</IconColor>
<SpellBookSortCategory>World</SpellBookSortCategory>
<SpellBookSortSubCategory>Map</SpellBookSortSubCategory>
<SpellType>Strategic</SpellType>
<SpellClass>Terraform</SpellClass>
<SpellSubClass>Other</SpellSubClass>
<SpellTargetType>NeutralGround</SpellTargetType>
<AutoUnlock>1</AutoUnlock>
<Radius>2</Radius>
<Prereq>
<Type>AbilityBonusOption</Type>
<Attribute>Fire3</Attribute>
</Prereq>
<SpellResourceCost>
<Resource>Mana</Resource>
<Amount>150</Amount>
</SpellResourceCost>
<GameModifier>
<ModType>Map</ModType>
<Attribute>PlaceEnvironment</Attribute>
<TerrainType>BarrenEnvironment</TerrainType>
</GameModifier>
<ValidTerrainCategory>Forest</ValidTerrainCategory>
<ValidTerrainCategory>Land</ValidTerrainCategory>
<AIData AIPersonality="AI_General">
<AIPriority>0</AIPriority>
</AIData>
<HitSoundFX>Spell_BirthOfSummer_01</HitSoundFX>
<SpellDefEffect>
<EffectName>Revive_Land</EffectName>
<LocalPosition>0,0,0</LocalPosition>
<EffectScale>1</EffectScale>
<EffectDelay>0</EffectDelay>
<SnapToTerrain>1</SnapToTerrain>
</SpellDefEffect>
</SpellDef>
Level 3
<SpellDef InternalName="ScorchedEarth3">
<DisplayName>Scorched Earth III</DisplayName>
<Description>Burn the town to the ground.</Description>
<Image>ReviveLand_Painting.png</Image>
<IconFG>S_BirthOfSummer_Icon.png</IconFG>
<IconColor>153,110,71</IconColor>
<SpellBookSortCategory>World</SpellBookSortCategory>
<SpellBookSortSubCategory>Map</SpellBookSortSubCategory>
<SpellType>Strategic</SpellType>
<SpellClass>Terraform</SpellClass>
<SpellSubClass>Other</SpellSubClass>
<SpellTargetType>NeutralGround</SpellTargetType>
<AutoUnlock>1</AutoUnlock>
<Radius>5</Radius>
<Prereq>
<Type>AbilityBonusOption</Type>
<Attribute>Fire4</Attribute>
</Prereq>
<SpellResourceCost>
<Resource>Mana</Resource>
<Amount>300</Amount>
</SpellResourceCost>
<GameModifier>
<ModType>Map</ModType>
<Attribute>PlaceEnvironment</Attribute>
<TerrainType>BarrenEnvironment</TerrainType>
</GameModifier>
<ValidTerrainCategory>Forest</ValidTerrainCategory>
<ValidTerrainCategory>Land</ValidTerrainCategory>
<AIData AIPersonality="AI_General">
<AIPriority>0</AIPriority>
</AIData>
<HitSoundFX>Spell_BirthOfSummer_01</HitSoundFX>
<SpellDefEffect>
<EffectName>Revive_Land</EffectName>
<LocalPosition>0,0,0</LocalPosition>
<EffectScale>1</EffectScale>
<EffectDelay>0</EffectDelay>
<SnapToTerrain>1</SnapToTerrain>
</SpellDefEffect>
</SpellDef>
Level 4
<SpellDef InternalName="ScorchedEarth4">
<DisplayName>Scorched Earth IV</DisplayName>
<Description>Burn the region to the ground.</Description>
<Image>ReviveLand_Painting.png</Image>
<IconFG>S_BirthOfSummer_Icon.png</IconFG>
<IconColor>153,110,71</IconColor>
<SpellBookSortCategory>World</SpellBookSortCategory>
<SpellBookSortSubCategory>Map</SpellBookSortSubCategory>
<SpellType>Strategic</SpellType>
<SpellClass>Terraform</SpellClass>
<SpellSubClass>Other</SpellSubClass>
<SpellTargetType>NeutralGround</SpellTargetType>
<AutoUnlock>1</AutoUnlock>
<Radius>20</Radius>
<Prereq>
<Type>AbilityBonusOption</Type>
<Attribute>Fire1</Attribute>
</Prereq>
<SpellResourceCost>
<Resource>Mana</Resource>
<Amount>1000</Amount>
</SpellResourceCost>
<GameModifier>
<ModType>Map</ModType>
<Attribute>PlaceEnvironment</Attribute>
<TerrainType>BarrenEnvironment</TerrainType>
</GameModifier>
<ValidTerrainCategory>Forest</ValidTerrainCategory>
<ValidTerrainCategory>Land</ValidTerrainCategory>
<AIData AIPersonality="AI_General">
<AIPriority>0</AIPriority>
</AIData>
<HitSoundFX>Spell_BirthOfSummer_01</HitSoundFX>
<SpellDefEffect>
<EffectName>Revive_Land</EffectName>
<LocalPosition>0,0,0</LocalPosition>
<EffectScale>1</EffectScale>
<EffectDelay>0</EffectDelay>
<SnapToTerrain>1</SnapToTerrain>
</SpellDefEffect>
</SpellDef>
Level 5
<SpellDef InternalName="ScorchedEarth5">
<DisplayName>Scorched Earth V</DisplayName>
<Description>Burn the world to the ground.</Description>
<Image>ReviveLand_Painting.png</Image>
<IconFG>S_BirthOfSummer_Icon.png</IconFG>
<IconColor>153,110,71</IconColor>
<SpellBookSortCategory>World</SpellBookSortCategory>
<SpellBookSortSubCategory>Map</SpellBookSortSubCategory>
<SpellType>Strategic</SpellType>
<SpellClass>Terraform</SpellClass>
<SpellSubClass>Other</SpellSubClass>
<SpellTargetType>NeutralGround</SpellTargetType>
<AutoUnlock>1</AutoUnlock>
<Radius>200</Radius>
<Prereq>
<Type>AbilityBonusOption</Type>
<Attribute>Fire1</Attribute>
</Prereq>
<SpellResourceCost>
<Resource>Mana</Resource>
<Amount>20000</Amount>
</SpellResourceCost>
<GameModifier>
<ModType>Map</ModType>
<Attribute>PlaceEnvironment</Attribute>
<TerrainType>BarrenEnvironment</TerrainType>
</GameModifier>
<ValidTerrainCategory>Forest</ValidTerrainCategory>
<ValidTerrainCategory>Land</ValidTerrainCategory>
<AIData AIPersonality="AI_General">
<AIPriority>0</AIPriority>
</AIData>
<HitSoundFX>Spell_BirthOfSummer_01</HitSoundFX>
<SpellDefEffect>
<EffectName>Revive_Land</EffectName>
<LocalPosition>0,0,0</LocalPosition>
<EffectScale>1</EffectScale>
<EffectDelay>0</EffectDelay>
<SnapToTerrain>1</SnapToTerrain>
</SpellDefEffect>
</SpellDef>