[At this, Garrosh smirks. The dagger flies at him, sure, but he's facing it. He can use Gorehowl to deflect the projectile, and then slides the axe down his hands so he's at the end of the shaft and spin with it in hand at the end of his charge. It hurts more on the daggers in his back, but if he's timed it well enough and his quick estimation of the singing blade's reach is right, he should be able to connect with all three Lokis.
[Action]
Mind you, he's doing this on the fly]