Baited Hook on Glasc Mixologist → finds Harnessed Dragon which occurs first, Harnessed Dragon entering the battlefield or Glasc Mixologist deathknell?

Harnessed Dragon's "When you play me" resolves first. Glasc Mixologist's Deathknell resolves after.

Here's the full sequence:

1. Baited Hook begins resolving — kills Glasc Mixologist.
2. Glasc Mixologist's Deathknell trigger is created as a pending item (before it moves to trash, per Rule 808.1.d.2).
3. Baited Hook continues — you look at top 5, find and play Harnessed Dragon.
4. Harnessed Dragon enters and its "When you play me" (WYPM) ability becomes a pending item on the chain.
5. During FEPR, both pending items finalize in the order they were created: Deathknell first, then WYPM. But the chain resolves LIFO — newest item first.

So the resolution order is:

• 1st to resolve: Harnessed Dragon's WYPM — kill an enemy unit.
• 2nd to resolve: Glasc Mixologist's Deathknell — play a unit (cost ≤ 3 and ≤ A) from your trash.

This means if you kill an enemy unit with Harnessed Dragon first, you can then use the Deathknell to revive something from your trash afterward — the board state may have changed in between.