Hand Grenades and Fireballs

When your friends are close enough to get singed

From it’s wargaming roots, D&D has allowed Area of Effect attacks to split fighters in melee with one another. The phrase “I cast the fireball to hit the monster but not my friends” has been around since the beginning. Precisely measuring out squares or inches on a battle-mat to include the monsters and not the characters is a refined skill for grid-tacticians everywhere.

I’ve always hated it. It slows combat to a crawl as players agonize over where the center of their Fireball, or their Cone of Cold, or Entangle Spell should be to get the most enemies and no party members.

For me, this also breaks immersion. The splitting of combattants in melee assumes that two fighters stand still until they move to a new position. Bashing away at one another like a pair of Rock-em Sock-em Robots, anchored to the spot. This is not how fighting happens. Look at MMA fights, or boxing matches, wrestling (both intramural and pro), or even a football play or rugby scrum. Ain’t no one standing still long enough to precisely drop a 20 foot radius ball of fire so one guy gets burned ant the other doesn’t. All fighters in a melee are in constant motion, often grappling or piled up on the ground.

I use the following House Rule in my games with regards to what happens when a spellcaster tries to put the edge of an AoE spell between two fighters in melee with one another.

Area of Effect Attacks into Melee

  • Anyone who is in melee combat is affected by any AoE that would affect any combatant in that combat in that round. i.e – a spellcaster is not able to position an AoE effect in such a way that one combatant in a melee is affected while others are not. It’s either everyone in the combat or no one in the combat.
  • There is a “fringe zone” around the edge of an AoE that extends outside the limit of the AoE. Anyone within the fringe (a 5 foot (1.5 meter) border) who is also in melee combat with someone in the AoE is still affected, but in the instance of where a Saving Throw is necessary, the targets in this fringe zone have Advantage to that Saving Throw.

Example: We have three potential targets of a fireball.
Target 1 is the intended target of the spell and is within the AOE. Target 1 is affected as normal and makes a Saving Throw as per the rules.
Target 2 is in the fringe zone and is in melee with Target 1. Target 2 is affected, but has Advantage to their Saving Throw.
Target 3 is in the fringe zone and is not in melee with either Target 1 or Target 2. They are not affected by the spell.

  • If all combatants are in the fringe zone of an AoE, but none are in the AoE itself, no one in the combat is affected by the spell.
  • If a target is in the fringe zone but is attacking with a weapon that has the reach quality (like a Halberd), then the target is not affected by the AoE.

Example #2: Same three potential targets of the fireballThe circumstances are the same, except Target 3 is outside the fringe zone, but is in melee combat with Target 2. In this case, Target 3is considered in the fringe zone.

Example #3: as the previous example but with the inclusion of Target 4who is outside the fringe zone. If Target 4is in melee combat with Target 3, Target 4is considered outsidethe fringe zone. If an AoE spell has no Saving Throw (like SLEEP) then anyone affected by the spell is affected normally, whether or not they are in the finge zone. If an AoE has a Magic Attack Roll, and not a Saving Throw anyone affected by the fringe zone has a +5 Bonus to their Armor Class.

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