"Gambling isn't really my sport." Fimble excuses himself, before moving to the back of the cave where the cavern begins.
Finding nothing better to do, he summons four dancing lights and send them down into the tunnel to possibly get a view of the large cavern.

Spoiler
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Max range 120' + visibility (which I guess is 60') the lights cannot stray more than 10' from one of the others, so Fimble will keep them close together exploring every bit of the cave he can see without venturing in himself. The duration is one minute.