There needs to be a better indication for the CC effect "Grounded" specifically for Cassiopeia

I had no idea until yesterday that Cassiopeia's poison grounded people standing inside of it. Grounded means you can not cast dash spells of any kind TP or flash. The only indication of this is the ability gets greyed out. Which is exactly what happens when spells bug out and you cant use them anymore which has happened in the past. I think there needs to be something to better indicate that your ability has been turned off because you are under the effect of "Grounded" instead of it just greying out your ability.