Does Jhin's fourth spell or Rift Herald Deathknell resolve first?
Jhin player kills Rift Herald with their fourth spell of the turn. Jhin is the turn player. Which resolves first: Jhin's legend trigger or Rift Herald's Deathknell?

When I move to a battlefield, look at the top 3 cards of your Main Deck. You may reveal a unit from among them and draw it. Recycle the rest.
[Deathknell][>] Play a unit from your hand to your base, ignoring its Energy cost. (When I die, get the effect. You must still pay its Power cost.)
Artist: Grafit Studio
Card Set: Unleashed
Jhin player kills Rift Herald with their fourth spell of the turn. Jhin is the turn player. Which resolves first: Jhin's legend trigger or Rift Herald's Deathknell?
I use Baited Hook and kill a Rift Herald, triggering its Deathknell. I also play Harnessed Dragon from the hook effect. When Dragon enters, does his play effect go on the chain above the second Deathknell? Do cards in hand have targeting choices on finalization?
If Master Yi dies in the same combat exchange as an enemy Deathknell unit while Yi has Zhonyas available, does Zhonyas replacement happen in time so Yi is already in base before the enemy Deathknell resolves?
Source: Unleashed Rules FAQ and Clarifications Rift Herald has a Deathknell that does not say may. If my opponent has a unit in hand, are they forced to reveal that and play it?
If Rift Herald dies, can I play Thousand-Tailed Watcher from its Deathknell for 1 Power and choose to pay Accelerate as well?