Blinding Of The Old Ones clarification

[fallen basin]

I'm sorry if this has been asked before, but I did not see it so I'm assuming that it has not been. Normally I would check the release notes, but they did not clear this up.

The card "Blinding of the Old Ones" states the following: "Crush – When this deals 4 or more damage to a Guardian hero, cards they own lose all abilities during their next turn."

I understand how this works with cards in deck (or in play, etc), but I had a player ask me if their hero is a card & as such would lose its ability during that turn. My instinct was no, as it's not referred to one during decklist rules for any format, but as I felt that was a flimsy reason I thought that I should reach out & clarify this accordingly.

[tawdry iris]

CR 1.3.1a

1.3.1a The owner of a card is the player who started the game with that card as their hero or as part of their card-pool, or the player instructed to create it or otherwise put it into the game.

[jolly zealot]

Heroes are cards and have owners