|School of Fire Magic|
|Magic Arrow *|
|Protection from Fire|
|Summon Fire Elemental|
|School of Air Magic|
|School of Earth Magic|
|School of Water Magic|
|Probability of occurrence (%):|
Fire Shield is a 4 level spell in the School of Fire Magic. Target allied stack gains a shield of fire, that damages all units trying to attack it in melee. Damage is based on damage done to enchanted unit, considering all attack bonuses of the attacker but not considering all defensive bonuses (Armorer, Attack-Defense difference, Shield etc) of the enchanted unit. If the enchanted unit is totally destroyed, only the damage needed to kill it is used as a base for calculations.
Damage taken by the enchanted unit must be greater than 4 or the fire shield will have no effect.
Efreet Sultans have an innate fire shield equivalent to basic fire shield. You can cast Fire Shield onto Efreet Sultans, but only the better one will be applied as a result. That means only advanced or expert fire shield will improve the shield.
Units immune to Fire Shield enchantment:
- Efreet and Efreet Sultans
- Fire and Energy Elementals
- Firebirds *(not in Horn of the Abyss) and Phoenixes
Units immune to enemy Fire Shield:
- Efreeti and Efreet Sultan (Efreet Sultans have natural basic fire shield.)
- Fire and Energy Elementals
- Firebird *(not in Horn of the Abyss) and Phoenix
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Fire Shield has good synergy with defensive spells like Shield or Stone Skin, since damage returned is based on damage dealt to shielded target pre mitigation. Spells like Cure, Animate Dead, or Resurrection will help to keep shielded troop alive for longer. Vampire Lords in particular might be better served with Counterstrike, as Fire Shield damage does not heal/resurrect their casualties and lowers their potential healing.
Because its damage is pretty much unavoidable, Fire Shield can be used as psychological warfare tool to present unwinnable situation to opponent - either ignore the shielded troop and possibly let it run wild, or take almost guaranteed heavy losses trying to kill it in melee if they cannot remove the Fire Shield or deal with the shielded stack in non-melee way.
Countering Fire Shield generally means either Dispelling it, ignoring the Fire Shielded stack by either spells like Blind, Slow or just hoping it will not deal too much damage if left unchecked, or circumventing its mechanic by using ranged attacks and damage spells instead of melee. Otherwise prepare to take at least some losses, unless attacking with high health troops that might not be killed by Fire Shield damage. Protection from Fire greatly decreases power of Fire Shield. Iron Golems' magic resistance is at least partially effective against Fire Shield - they seem to take only about half of damage percentage that other units suffer. Also, sending a Serpent Fly or Dragon Fly to attack a unit with Fire Shield will result in it getting dispelled.
Fire Shield is best used on stacks that are going to be attacked often in melee, like Griffins or Vampire Lords. It only works in melee, so it is of limited use against ranged troops. This spell works very well with Counterstrike, adding extra damage that ignores most damage reductions to retaliation and doesn't count against limit of counterattacks per turn, and ensuring the attacker will take at least some damage even if they destroy your stack completely. This also means Fire Shield is great against high level melee troops (as shown in Examples section), as it makes "clean" sweeping enemy stacks up impossible by reflecting part of their usually high damage back to them, and ignoring their high defense.