In terms of what to spike from a shard holder, would it be possible for one to spike the investiture from the shard holder? From what I can tell, shards are basically large amounts of investiture with an intent. Would it be possible to spike away the investiture from the shard like one would spike away breaths? Also as a side note, if someone made a big enough nicrosil metalmind, could a shard store all of its power in it?