Elisha:
"You may discard an evil Enhancement from opponent’s deck. You may reveal a hand: Shuffle evil Dominants. If you shuffle at least 1, your green Enhancements cannot be negated."
Elisha reveals and shuffles an evil Dom from the opponent's hand, making his green Enhancements CBN. But, what if the opponent negates him? Say, with Abaddon. They get their evil doms back, all that. Would Elisha's CBN GE stick or would GE be negatable now? I would say it would lose the CBN but I've never encountered a case where something gaining CBN could lose its CBN status once gained.