Enslaved Arceus is a building in Goomy Clicker that appears in all three games. It costs 150,000 Goomies 20,000,000 in GC2, 2.55555m in GC3.
It adds 2.767m Goomies to your status.(18,000 in GC2, and a very large amount in GC3).
There is no description in 1 and 3. In GC2, there's an accurate description:
"An Arceus captured and forced to give birth to Goomies nonstop."
It explains how come it produces large amounts of goomies.