User blog comment:GreenMoriyama/Oonoki, the Heavy Wrestler/@comment-25235491-20160415163355/@comment-24385282-20160415225848

That's correct, a grounded champion is unable to activate any effects that cause them to dash or blink. This includes preventing the use of, however I'm not 100% certain on the interaction with  or , nor any similar abilities if there are any.