Old Ice Age relic that can exile key cards in any Commander game

An Ice Age artifact called Jester’s Cap can exile cards from an opponent’s library; with recursion or reanimation (e.g., via Toph, the First Metalbender or other artifact-reanimators) it can repeatedly remove threats, potentially crippling a Commander deck. The piece compares it to other exile options (Extract, Sadistic Sacrament, Grinning Totem) and notes that in Commander the payoff is often limited by redundancy in decks. Despite its age and a low price (~$0.39), it’s rarely played (EDHREC shows under 5,000 decks), making it a surprising but risky tactic.