As soon as he sees a face through the cut down door, Ciraneoth shoots an arrow at that person.

Spoiler: OOC rolls
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If Legolas can do it in the mines of Moria, I can try it as well.
half-action: aim (to get a +10%)
half-action: shoot: (1d100)[99] vs 66 (and minus cover, but I'll let the GM decide on how much that is).
for damage: (1d10+3)[5]