When Switcheroo (played from hidden) swaps Embermonk with another unit, does Embermonk gain +2 Might before or after the swap?

Ruling: Switcheroo's effect resolves in full first, swapping the units. Then Embermonk's trigger goes on the chain and resolves, giving it +2 Might.

Sequence:

• Switcheroo is played from hidden and its effect begins resolving
• The swap effect completes fully
• Embermonk's trigger goes on the chain
• Embermonk's trigger resolves and it gains +2 Might

Nuances:

• This same principle applies to Ravenbloom Student (swaps first, then gains +1)
• For Mundo, swap applies a snapshotted Might reduction equal to the difference between his Might and the other unit's Might. His passive still applies, but the snapshotted reduction cancels it out. Cards going to trash after the swap will still increase his Might because the swap reduction stays fixed for the rest of the turn.
• A helpful way to track swap effects is to imagine setting the unit's current Might to the new value at the moment Switcheroo resolves, then apply any further changes on top of that number.