Black Portal/1.03.24

Temples
The Black Portal works exactly like the Circle of Power and is used in the same way. However, it only affects raised units instead of summoned ones. As you would expect, the Black Portal is created through the Necromancy Magic sphere and is designed to improve Undead units raised by spells. The building is actually more durable than the Circle of Power and even has a longer view range, but it still wont take a hit and will still disappear over time. The Black Portal only affects raising spells through the Necromancery sphere.

Trivia
-Game files indicate that this building costs 100 Crystal and has a build time of 30 despite it not being build-able.