User blog comment:Newton Vitas/Leo, the Rainbow Spirit/@comment-5663427-20140720190334/@comment-7709681-20140720222816

Since the passive works similar to  plus turning it untargetable (I was going to use  as an example, but since the innate passive doesn't turn the user invulnerable.) I would, at its best, grant it a minimum cooldown of 160 seconds.