Mihail will charge in. I have no idea if this thing can be affected by the status effects, but it's worth a try.
For Athena!
Spoiler: Actions
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Knowledge Devotion roll will be +1-+5 to all attack and damage rolls
Knowledge: Religion - (1d20+13)[25] - This counts Peridokles's bonus and the Collector of Stories skill trick.
1-15: +1
16-25: +2
26-30: +3
31-35: +4
36+: +5
Charge the creature, and hit with a Shield Slam.
Attack - (1d20+15)[29]
Damage - (3d6+7)[14]
Trip attempt, though it may not apply - (1d20+10)[18]
And the creature needs to roll a DC 19 save vs daze if the attack hits. Generally, undead are not immune to the Daze status effect.
Modified 31 to hit, and 16 damage plus 5 cold damage.