Limbo Stalker

One of the predators that attack slaadi from time to time, Limbo stalkers are ravenous beasts and skilled hunters. Although they are more than a match for the average githzerai and can easily subsist on a diet of them, Limbo stalkers seek out slaadi in particular⁠—​the bigger the better (making blue or green slaadi the preferred targets). This is because Limbo stalkers lay their eggs in the rotting carcasses of other creatures, giving their young something to feed on the moment they hatch, and the corpse of a slaad lasts much longer than that of a stringy githzerai.

Limbo stalkers have enormous amounts of patience and usually hunt by hiding somewhere near where their prey travels. Using their limited invisibility ability to camouflage themselves, Limbo stalkers wait for just the right opportunity to strike: a lone traveler, not paying any particular attention to his surroundings, and passing within 40 feet of a lurking Limbo stalker. The Limbo stalker then lurches out of its concealment, bull rushing the target into a solid object (sometimes, the very ground that the target has shaped to stand on). Once the target is prone, the Limbo stalker launches a flurry of claw and bite attacks until the target, or the stalker, is dead.

When these creatures hunt in numbers, one Limbo stalker acts as the pack leader, by some understood agreement. In such cases, the pack attempts the same basic tactic, except that only one stalker (the leader) attempts the bull rush. The others come out of concealment only if the attack succeeds or if the target, in escaping, strays too close to one of the concealed stalkers to resist launching a second attack. Only when the target is dispatched will any Limbo stalkers still in concealment emerge to lope off with the others or help carry the prize.

A Limbo stalker’s claw and bite attacks, as well as any weapons it wields, are treated as chaotic-aligned for the purpose of overcoming damage reduction.

Limited Invisibility (Ex): Just as other predators use their environments as camouflage, a Limbo stalker is able to exert its will over its immediate surroundings in Limbo to conceal its own presence. By making a DC 16 Wisdom check as a free action, a Limbo stalker can wrap itself in an area of controlled Limbo so that it seems to vanish. If this check fails, a Limbo stalker can attempt the check once per round as a free action. Once a Limbo stalker establishes control, it need not check again.

This effect ends the moment the Limbo stalker moves or attacks. It likewise ends if another sentient creature exerts control over the same area of Limbo and uncovers the Limbo stalker.

Source: Planar Handbook, page 126.