[With a nod, he peers through the hole again. There is definitely a thick atmosphere of nightmare energy within... Which only makes him wonder not only what made it, but what is down there to make it continue to permeate so much.
So with some focused concentration, he expands the lightning in his hand to create another lightning orb. However, a thin strand remains connected to his finger, almost like a string, and he then slings it out through the tunnel.
He has no idea what's there, but he can at least use this to get a sense of how deep it may go. And at the very least, the strand of lightning can keep the tunnel illuminated a bit. So on and on that orb will fly through the tunnel, bouncing every now and then when it hits a wall...]
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So with some focused concentration, he expands the lightning in his hand to create another lightning orb. However, a thin strand remains connected to his finger, almost like a string, and he then slings it out through the tunnel.
He has no idea what's there, but he can at least use this to get a sense of how deep it may go. And at the very least, the strand of lightning can keep the tunnel illuminated a bit. So on and on that orb will fly through the tunnel, bouncing every now and then when it hits a wall...]