[RPG] Is it possible to affect targets with spells from the other side of an anti-magic field

antimagic-fielddnd-5espells

Suppose a short, 5'x5', 20' long open corridor separates two rooms, with no other features besides that inside the corridor was the source of an active Antimagic Field.

If your Wizard cast Magic Missile from one room at a target within range and in the other room, both outside the AMF, what would happen?

Now the Wizard casts Fireball at a ground target near some enemies in the other room. What happens?

Same again, but now the Wizard casts Cone of Cold to include a target within range and line of sight in the other room. What happens?

Finally, the Wizard casts Polymorph (sheep) at a target in the other room. What happens?

Best Answer

Antimagic Field only affects its own area

Specifically:

Targeted Effects: Spells and other magical effects, such as Magic Missile and Charm Person, that target a creature or an object in the Sphere have no effect on that target.

Areas of Magic: The area of another spell or magical effect, such as Fireball, can't extend into the Sphere. If the Sphere overlaps an area of magic, the part of the area that is covered by the Sphere is suppressed. For example, the flames created by a Wall of Fire are suppressed within the Sphere, creating a gap in the wall if the overlap is large enough.

Providing that you meet the targeting requirements of the particular spell (the default being a clear path to the target [check] and being within range) then the antimagic field does not prevent you from targeting a spell through it.

So:

  1. The Magic Missile hits.
  2. The Fireball works except that any part of its area of effect that overlapped the Antimagic Field would be suppressed.
  3. The Cone of Cold works everywhere except where it overlaps the Antimagic Field
  4. With the Polymorph, if the creature is willing or fails its saving throw it is now a sheep.
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