Plane of Earth Earth elemental Magma elemental Mud elemental Plane of Fire Fire elemental Magma elemental Plane of Metal Metal elemental Plane of Water Ice elemental Mud elemental Water elemental Plane of Wood Wood elemental Ethereal Plane Aether elemental ...
All elementals are strong, inediate and neutral-aligned monsters that lack a sense of smell. Except for the stalker, they are eyeless, mindless and amorphous - they also possess an MR score of 30.
Instant effect, "hitscan" single target spells didn't work on monsters in MM8 (not sure if any monster ad one of those in MM7 tho), it's a long-known issue. So for example implosion on greater air elementals, mass distortion on greater earth elementals or paralyze on plane guardians ...