moriríais
-you would die
The word moriríais is the conditional form of morir in the second person plural.
See the full morir conjugation

morir

Os dije que moriríais los primeros, si no obtenía lo que quería.
I told you you'd be the first to go if I didn't get what I want.
Tenía la sensación de que moriríais mucho antes.
I had the sense to get dying out of the way early.
Supongo que no os moriríais de hambre.
I guess you wouldn't starve.
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