Horrors Beyond Comprehension

As Horrors Beyond Comprehension comes into
play its controller chooses a player other than themselves. This spells controller and the chosen player each choose a creature type.
All creatures are the chosen types in addition to horrors and all their other types as long as
Horrors Beyond Comprehension is in play.
"You will live to see man-made horrors beyond your comprehension..." — Nikola Telsa