Alucard just watches, shaking his head. He'll ration what's left after this, if only out of sheer need.]
Well, a tethered shovel sounds absolutely ridiculous, even by our standards. [The other option though, that gets consideration and a very long hmmmm.>]
Communing sounds like a slightly learning curve, but probably more effective.
Why don't we try it first by hovering just out of range but directly overhead of what we believe to be the source? That will prevent us from having to finish our rations, but also make it clear that we're genuinely invested in this spirit?
[He steps onto the disc carefully, and-- ah. He understands. Another few steps, until he's got control of the concept. Then? Onward and onward to the center.]
There should be an additional element though. Not just willing something out but trying to make it clear that this is to help. The nuance might be important.
[Expelling magical energy. Alucard nods and begins. Sending his own efforts outward, directing them down to that center and the mound. Like casting out a lifeline for a man drowning. They need only hang on and be pulled in.]
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