Creature — Nightmare Horse

Plague Mare

Plague Mare trading card
Creature — Nightmare Horse1 exact printing

This creature can't be blocked by white creatures. When this creature enters, creatures your opponents control get -1/-1 until end of turn.

From Magic: The Gathering.

Exact printings

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6ohq56cr2dpb1hsd6os6rr.