His feet solidly planted in the stream in evident defiance, Nathan's mind went into overdrive. He consciously made an effort to process information outside the centre of his field of view, in an attempt to register any kind of anticipation to the deathstalker's movements. At the same time, he examined his options. His partner was above the canopy. To his right, the rest of his fledgling team was dealing with one, or perhaps several, pack(s) of beowolves. He could not back down and survival was the top priority, while his actual goal was forcing the giant, fake arachnid of a Grimm in front of him to focus its entire attention, aggression and intellect onto himself.
Turns out he would be using that plan after all.
Patiently, he waited in the same defensive stance as before, not moving back or to the side from the predator. The latter very obviously found this insulting, as it hissed and snapped its immense claws in an attempt to intimidate him - with no result. He was too focused to even register threat displays as actual threats. The deathstalker, however, did not share his patience and soon lunged at him, claws open for a shredding.
The entirety of Nathan's plan unfolded within the next second. Retracting his legs towards his body as fast as he could while bending down and using Ergia as a pushrod, he dropped down and forwards, the scorpion's claws swiping at air as it barrelled right past him. As fast as he could, Nathan shoved his staff through a gap between two of the beast's right legs and, using one of his hands, hoisted himself on top of the bony plates. He immediately rammed one end of Ergia in the articulation between two large plates and laid flat, back towards the ground, while holding the staff with both hands.
The shrill was decidedly painful to Nathan as the deathstalker raged against both the pain of having plates forced apart and the humiliation of a human deciding to ride it. It frantically trashed around, slamming against the ground, spinning left and right, anything to attempt to dislodge the pest on its back, out of reach of its claws.