Foot Mystic

• WOTC Official Reminder Textofficial rules
  Lifelink — Damage dealt by this creature also causes you to gain that much life.

• WWizards of the Coast2026-01-27
  Official Ruling
  Some disappear abilities, such as those of the above cards, are triggered abilities with intervening if clauses. If a permanent hasn't left the battlefield under your control that turn by the time the disappear ability would trigger, it won't trigger at all.

Rulings via Scryfall