"I detect no magic from the bones or ceiling, for what that's worth."
[Gameplay] 7. The Search for the Forgotten Pharoah
I think it's fair to say you were all ready and it's action is to animate, so you may act first. (Doesn't matter if you have it's head.)
-Increase its speed by 30 feet.
-Stand up as a swift action without provoking an attack of opportunity.
-Make one extra attack as part of a full attack action, using its highest base attack bonus.
-Gain a +2 bonus on attack rolls and a +2 dodge bonus to AC and Reflex saves.
-Cast a single spell of 2nd level or lower as if it were an enlarged, extended, silent, or still spell.
Rolls
Acrobatics to get behind golem - (1d20+15)
(14) + 15 = 29
Sneak Attack plus flanking (if applicable) - (1d20+10+2+2, 1d4+5+3d6)
1d20+10+2+2 : (12) + 14 = 26
1d4+5+3d6 : (2) + (633) + 5 = 19
AC 21, DR 5/?, damage taken: 14
Rolls
Tabat Menes: Adamantine Heavy Flail - Atk/Dam - (1d20+15, 1d10+13)
1d20+15 : (4) + 15 = 19
1d10+13 : (8) + 13 = 21
Flat-footed AC is 19. 21 damage, bypasses the DR. Damage taken, 55.
The creature takes horrific damage from those attacking it, then throws bones at Tabat even as it forms into it's full shape. These bones magically duplicate and form a cage surrounding Tabat. The Bone came squeezes crushing Tabat within.
You're all up.
Rolls
Deadly Aim: Bow, dmg, Bow, dmg - (1d20+8, 1d8+8, 1d20+8, 1d8+8)
1d20+8 : (18) + 8 = 26
1d8+8 : (7) + 8 = 15
1d20+8 : (8) + 8 = 16
1d8+8 : (6) + 8 = 14
Deadly Aim: Bow, dmg - (1d20+8, 1d8+8)
1d20+8 : (11) + 8 = 19
1d8+8 : (7) + 8 = 15
Ranged touch - (1d20+13)
(14) + 13 = 27
CMB - (1d20+16)
(17) + 16 = 33
Damage to Tabat - (2d6+4)
(13) + 4 = 8
Rolls
Sneak Attack (plus Flanking, if applicable) - (1d20+10+2, 1d4+5+3d6)
1d20+10+2 : (5) + 12 = 17
1d4+5+3d6 : (3) + (362) + 5 = 19
Sneak Attack (plus Flanking, if applicable) - (1d20+10+2, 1d4+5+3d6)
1d20+10+2 : (8) + 12 = 20
1d4+5+3d6 : (2) + (362) + 5 = 18
Rolls
CMB v. CMD 28 - (1d20+12)
(3) + 12 = 15