New answers tagged character-death
It sounds like your trying to hybrid the Sphere of Annihilation. Seeing as the 4e mechanics clash with the 3.x mechanics and your choice for PK upon jumping in, it is truly up to DMD. For balance purposes, relating to 4e approach, I would go with Erik's source: Touching resulting being pulled in. This way, should they stick an item in to test the depths ...
It's a sphere of annihilation. It annihilates. If they touch it, they're gone. You can house rule it any way you'd like, but historically that's how it works.
Since this is essentially now an item that you made yourself, the answer to what happens logically can also only be "Whatever you want to happen." There are no rules in 4e for losing limbs or such things, and there are no Save vs Death effects either, so you're pretty deep in house rule territory already.
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