Melira, the Living Cure (Borderless Manga) [Phyrexia: All Will Be One]

If you would get one or more poison counters, instead you get one poison counter and you can't get additional poison counters this turn.

Exile Melira, the Living Cure: Choose another target creature or artifact. When it's put into a graveyard this turn, return that card to the battlefield under its owner's control.