Gritil, seeing some of her companions leap into battle, bravely charges in herself not quite sure what she is getting herself into.
"Who better to fight undead than me... the also-dead," Gritil thinks as she moves into position between the snow bear and the clearly enraged blonde warrior.
Just as Honsul's branch flies overhead missing the zombie, Gritil launches an Opening Strike at the (red) zombie hoping to open him up for another attack by Garran's sharp sword.
Opening Strike: 1d20 + 3 ⇒ (8) + 3 = 11
Slam/Bludgeoning Damage: 1d4 + 1 ⇒ (3) + 1 = 4
If Opening Strike hits (though I don't think 11 is high enough) the (red) zombie, as per Gritil's skill Opening Strike, Garran "can make a single attack at his full base attack bonus against that enemy as an immediate action."