The Gate Barrier

The Gate Barrier- Was a highly concentrated sphere of mana sealed underground. It was originally created as a weapon of devastating power and is highly implied to have been created on our side of The Portal during the age of the Old Kingdom. Tyler claimed that it was created in order to keep The Witch in check, and that it's destruction would bring about hers. However, when destroyed by Steven, it just pushed Andy's Bloodline out of him and into the next inheritor. It also seemingly locked Steven's negative attributes but this was later revealed to be a temporary reaction to the new bloodline in his system. It's destruction directly leads to the deaths of hundreds, or maybe even thousands, of innocents above it, and indirectly leads to the death of Andy later on.