Sentinel is a MARVEL SNAP card that costs 2 energy and has 3 power. It has the effect: "On Reveal: Add another Sentinel to your hand."
It has variants that are part of the Pixel, Steampunk, Blueprints, Jim Lee and Kael Ngu categories.
Sentinel has synergy with Shang-Chi, Iron Man, Mystique, Jeff the Baby Land Shark and Cerebro.