Quiet Disrepair

Most green answers to artifacts and enchantments are one-shot and instant-speed: Naturalize and its many cousins blow the thing up and move on. This Aura inverts that template into a recurring, modal choice, and the recurrence is the price of stapling removal onto a permanent rather than a one-time spell. The target gets at least one more untap before the trigger can ever fire, and a sacrifice outlet, a bounce effect, or any enchantment removal of their own can snap the leash before upkeep comes around. The two modes pull in opposite strategic directions because the Aura provides no static debuff: the enchanted permanent keeps functioning normally until the destroy mode is chosen. Latch it onto an opposing problem and you are not pacifying it; you are scheduling its death for next upkeep and choosing each turn whether to finally pull the trigger. The life-gain mode, by contrast, points at your own board: enchant a permanent you control and harvest two life every upkeep while it keeps doing its job, no destroy clause to ever waste on yourself. That split is the real identity here. Whatever the Aura is attached to is the only thing the destroy mode can ever hit, so the choice you renew each upkeep is not where to aim but whether to spend the kill now or bank another two life and keep the option open. One card, two jobs, the same target underneath both.