Coercion vs Chimera (not a bug)

[Tria]

Chimera: 1: Chimera has +3 attack and is reduced by 3 health until the start of your next turn.

If Coercion takes Chimera, and then uses Chimera's ability, shouldn't Chimera have +3/-3 until the start of the next turn for the Coercion player?
Currently Chimera reverts when returning to original owner's next turn.

[Gondorian]

Hiya. This is a good question, but not a bug.

Any wording on the card that uses "you" or "your" is always speaking to the controller at the moment in time. If the controller changes, then the wording speaks to the new controller.

So once Coercion comes off, the "start of your turn" talks again to the original controller and the effect is canceled.

I appreciate it would have been simpler if the card said "until the start of its controller's next turn", but it predates the existence of Coercion by 3 years!