Initiative:
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(1d20+3)[12]


As soon as Graorin sees Old Claws start moving - not towards him, but towards Val - he starts moving as well, interposing himself between crab and horse. He will cast the spell as soon as the crab is in range, no longer waiting for a sign of overt hostility because there already is one.

Athedru doesn't get a response from him - he's focused entirely on his quarry.