Cassiopeia vs Yuumi Matchup
Cassiopeia Interactions
- R Stun can interrupt Yuumi's (detached) R Channel.
- R Stun cannot interrupt Yuumi's (detached) W Dash. However, the Stun still applies. However, Yuumi's W goes on Cooldown.
Yuumi Interactions
- W Dash cannot be used while affected by Cassiopeia's W Grounded. It even puts W on Cooldown.
- TIP (Just a curious mechanic) If Yuumi runs into the Grounded effect while dashing with W to attach to another target, W goes on Cooldown, but the Dash already in motion isn't cancelled — once the attach completes, the Cooldown disappears.