Entangle Gold Mine without Root-Unroot

[4daHorde]

Hello, I am 4dahorde and i am trying to make an ability that is basically a modified "Root" ability for the ancients. In the new ability, I want the ancient to still be able to entangle gold mines, but not have the ability to unroot from the ground. I realized that, unfortunatley, both abilities are together as the root ability, so I could not stop one without using the other. Please help me, i am thoroughly stumped .

 

[Volvox]

If they are 1 ability, why don't you try making a dummy unit to entangle the gold mine when the real tree casts entangle.