Challenge - Design a Node for a Champion

Here's a challenge to test your imagination...Pick a Champion, then design a fight/node so that that champion is the only and/or best counter to it. Bonus points for using as few explicit restrictions (e.g. "Mystics Only") as possible.
0
Comments
Opponent periodically inflict a debuff on you for x seconds, while this debuff is active, the opponent is unstoppable and stun immune.
Possible counters - angela king groot and vision aarkus.
Can't kill, won't kill - attackers indestructible and immortality effects last twice longer, but opponent takes 90% less damage while the attacker don't have immortality or indestructible effects.