The Third Citadel Compendium (1985), p10-11 — Bellicose Bestiary

New Elementals

These new Elemental types are further manifestations of natural forces, akin to the basic elements of earth, air, fire and water. They have an affinity with one of the 4 elements, and will not attack, and cannot harm, other Elementals of that type. All the general rules that apply to Elementals hold true for these new ones (see page 47 of the Warhammer Battle Bestiary).

M	WS	BS	S	T	W	I	A	Ld	Int	Cl	WP
10	10	10	10	10	10	10	10	10	10	10	10

Basic Points Value 1133

[...]

Plague Elemental

This is an Elemental of the air. Its arrival can easily be foretold by a foul stench on the breeze, as of rotting flesh or garbage. Rules apply as for other Air Elementals. Plague Elementals can cast a Wind Blast spell, like other Air Elementals, but note that this is a rank, disgusting wind. This causes the equivalent of 1 strength 3 hit on each living target affected by the blast. Elves, because they are naturally fastidious if not obsessive about personal hygiene, suffer strength 4 hits instead. Victims turn black, their tongues swell horribly, skin blisters and great, yellow boils burst out all over their dying bodies.