If Kindred puts her ultimate on top of a target being revived by ZIlian ultimate, they will spawn with 1 hp. Now, Kindreds ultimate states that if the target drops to 10% health, then they are immune to both damage and healing until Kindreds ultimate is over and heals everyone inside. This means that based on the ultimates functionalities, Kindreds stopping all healing if the target has reached or is below 10% hp, and ZIlians healing a target for 600 / 850 / 1100 (+200% of ability power) Health when upon revival, this is working as it should. What I'm wondering is if this is intended from Riot, that Kindreds ultimate can be used to nullify ZIlian ult completely if timed correctly on a good pick, or if this is just one of those weird interactions that ends up happening when a completely new ability is added to the game. This is just something two friends noticed in an ARAM game and later tried out in a custom to see if it works.
Props to Kuck Findred and Kidsan for finding it and for recording it.