As he felt the cold leave his armour, Bjorn let out a warcry and moved towards the closest unengaged imp he could reach, taking another swing with his axe.

Spoiler: OOC actions and rolls
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I move to Y24 (I assume the high flying imps can't reach me if I can't reach them) and attack Z25 (if Mork hadn't attacked that one, otherwise I'll take X26 (and move to X25)
attack: (1d20+6)[13]
damage: (1d8+3)[7]