A Portal, you should be concerned with. Vampires and such.

Last feast the kin took strides against the Allfathers plaguing us in our own matters,
To divine where they must be, as to kill them with every intent.
This divination, however, could be compared to fishing.
For we used what was available to us, and through no small feat managed to spread what ourselves would call a "plague of curses" upon the vampires.
This is favorable.
For in the rituals completion, and their retaliation a gate opened.

This was nowhere near us you see, specifics are superfluous.
Now no birds have knocked at our door to say their neck has been de-veined, so we would expect the bats to hunt while we're gathered; how profane?

We've spoken to the witchhunters,
and mentioned it to few,
and now the time has come you see we mention this to you!

Oh be ready, we certainly are, they attack in the night and surely do bite.
But that's enough of the bloody rhyming you jest.

Yes yes, expect them to somewhat blindly lash out soon. Should be fun.