Yidris, Maelstrom Wielder is a legendary creature card from the Magic: The Gathering Commander 2016 set, classified as Unknown rarity (#50). Valued at approximately $7.11, it plays a significant role in decks focused on cascade mechanics, enabling players to cast spells for free. Its unique ability to trigger cascade when it deals combat damage makes it a strategic choice in various formats, contributing to its steady market interest among collectors.