[TimPC]

Also you found an error. “Your opponent” is not valid in the language of M:TG it needs to be “target opponent” because “your opponent” is not well defined outside of two-player games.

[latexr]

There are examples of MTG cards referring to a single opponent in old editions[1], digital editions[2], and Un-sets[3].

[1]: https://scryfall.com/card/leg/6/clergy-of-the-holy-nimbus

[2]: https://scryfall.com/card/ymid/14/clone-crafter

[3]: https://scryfall.com/card/ugl/62/gus

[Izkata]

I swear I also remember some burn spells that target a creature and then also deal damage to that creature's controller. I'd guess the wording came from trying to combine that with something else.

[TheDauthi]

Yep, Chandra's Outrage, for example.

"Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller."

[wyldfire]

Sure: that's why we have the oracle text.

[hutzlibu]

But in this context it seems that this applies to all the other creatures of the player(owner) of the target crearure.