Rust Monster	CR 3
Always N Medium Aberration Init +3; Senses darkvision, scent; Listen +7, Spot +7 Languages —
AC 18, touch 13, flat-footed 15 (+3 Dex, +5 natural) hp 27 (5 HD) Fort +2, Ref +4, Will +5
Speed 40 ft., Melee Antennae touch +3 touch (rust) and bite −2 (1d3) Space 5 ft.; Reach 5 ft. Base Atk +3; Grp +3
Abilities Str 10, Dex 17, Con 13, Int 2, Wis 13, Cha 8 Feats Alertness, Track Skills Listen +7, Spot +7 Advancement 6-8 HD (Medium); 9-15 HD (Large)
Rust (Ex) A rust monster that makes a successful touch attack with its antennae causes the target metal to corrode, falling to pieces and becoming useless immediately. The touch can destroy up to a 10-foot cube of metal instantly. Magic armor and weapons, and other magic items made of metal, must succeed on a DC 17 Reflex save or be dissolved. The save DC is Constitution-based and includes a +4 racial bonus. A metal weapon that deals damage to a rust monster corrodes immediately. Wooden, stone, and other nonmetallic weapons are unaffected.

Rust Monster

CR 3

Always N Medium Aberration

Init +3; Senses darkvision, scent; Listen +7, Spot +7

Languages —

AC 18, touch 13, flat-footed 15
(+3 Dex, +5 natural)

hp 27 (5 HD)

Fort +2, Ref +4, Will +5

Speed 40 ft.,

Melee Antennae touch +3 touch (rust) and bite −2 (1d3)

Space 5 ft.; Reach 5 ft.

Base Atk +3; Grp +3

Abilities Str 10, Dex 17, Con 13, Int 2, Wis 13, Cha 8

Feats Alertness, Track

Skills Listen +7, Spot +7

Advancement 6-8 HD (Medium); 9-15 HD (Large)

Rust (Ex) A rust monster that makes a successful touch attack with its antennae causes the target metal to corrode, falling to pieces and becoming useless immediately. The touch can destroy up to a 10-foot cube of metal instantly. Magic armor and weapons, and other magic items made of metal, must succeed on a DC 17 Reflex save or be dissolved. The save DC is Constitution-based and includes a +4 racial bonus.

A metal weapon that deals damage to a rust monster corrodes immediately. Wooden, stone, and other nonmetallic weapons are unaffected.