Sundering Sentinel is a mythic Artifact Creature — Construct card from Alchemy: Secrets of Strixhaven (YSOS), collector number 29.
Starting intensity 2 When this creature enters, it deals X damage to any target and you gain X life, where X is this creature's intensity. Then it intensifies. At the beginning of your end step, exile this creature. At the beginning of your next upkeep, return it to the battlefield under its owner's control. It gains haste.