While he still had his own vials of oil he didn't know how many could be employed in this battle, so was grateful for an additional supply, (though less grateful for the tongue lashing that accompanied it).
Aldan mixes a set of ball bearings in with the oil in an attempt to make a more thoroughly impassable area where ever it hits. He bears that in hand. He'd hoped they'd have opportunity to set more things up at the bridge - tripwires and such, but seeing their opponents had already shown made that impossible now.
Behind and above him, born aloft by a spectral hand, was a lit oil lantern, it's light pushing back the encroaching darkness of sunset.
init: 1d20+4 15
I seem to recall a description of the bridge being stone, am I wrong?
And are you thinking to do a Roll20 map?