Pukel Guardian Encounter - oblong block immersed in blue light

Looking for tips on this one. I have first hand knowledge of a freep
declaring allegiance and getting nothing. Any other ideas?

Here is the text of the encounter:

Encounter for XXXXXXXX at XXXX

XXXXXXXX was hastening to take cover from a sudden and unseasonal
storm when he came across an overgrown (or perhaps hidden!) path.
Daring the unexpected opportunity as a welcome respite from the foul
weather, he followed the path, finding it to be both narrow and
broken. After a brief but difficult trek, he was relieved to enter
the small, hidden cave found at the path's end. To his surprise, the
cave provided not only shelter from the weather but also an
interesting discovery. In the center of the cave was an oblong
block of dark stone, engulfed in a faint transparent blue light that
covered the entire surface. Upon the stone lay something that did not
shine, but attracted his attention nonetheless. The cave seemed
almost to be calling him. He couldn't tell what it was, and certainly
the item there was a powerful artifact, he thought, but how might one
breach the possible protections?

attack PHYSICALLY to drive off any guardians
attack MAGICALLY to dispel any wards
Creep forward silently and REMOVE the item from the stone block
Leap forward and STEAL the item from the stone block
WAIT and see if the shimmering light goes out
Declare your ALLEGIANCE
Say ______________ (only one word)
FLEE

Thanks in advance!