The subject of a riftal summons still cannot enter the rift.
Result:
A gaping rift of rippling umber luminscence rips through the air in front of you, followed by a sudden blast of frigid wind.
> go rift
As you approach a flickering umber rift, it shudders and winks out of existence.
A flickering umber rift shudders briefly and vanishes.
You can't do that.
>