I can't recall specifically if there is a portal effect somewhere during the game that I can re-use, but there must be. Anyway, I want to make random Daedric encounters ,with a portal that opens up in the over world, and spawns a couple of Daedric fighters. Spawning some enemies randomly would be fairly simple I'm sure, but I want them to seem to come from the portal.

How could I go about doing this? My scripting work thus far has been relegated to quests/spells/magic effects for player functionality (i.e. my zoom mod "A Closer Look")

Thanks!