Sapphire's Favored Construct

Emerald Gyre, 7th Level
N Large Construct
Init +1; Senses Darkvision 60 ft., low-light vision; Listen +0, Spot +0
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AC 27, touch 10, flat-footed 26
hp 101+2d6 (13 HD); DR 10/magic
fort +4, ref +5, will +4
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Speed 40 ft., fly 40 (average)
Melee 3 slams +20 (1d8+12)
Space 10ft., Reach 10 ft.
Base Atk +11, Grp +25
Atk Options improved grab, trip, pounce
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Abilities Str 35, Dex 13, Con --, Int --, Wis 11, Cha 11
SQ construct traits, natural ivisibility
Feats --
Skills Listen +0, Spot +0
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Improved Grab (Ex): An emerald gyre has the improved grab ability. To use this ability, the construct must hit an opponent smaller than itself with its slam attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity.
Trip (Ex): If an emerald gyre hits with a slam or claw attack, it can attempt to trip the opponent as a free action without making a touch attack or provoking attacks of opportunity. If the attempt fails, the opponent cannot react to trip the emerald gyre.
Pounce (Ex): An emerald gyre of at least 7th level can make a full attack if it charges a foe.
Natural Invisibility (Su): The astral construct is constantly invisible, even when attacking. This ability is inherent and not subject to the invisibility purge spell.