Tranquil Frillback

Green's reactive answers have historically arrived on single-use bodies: a naturalize on a stick, a graveyard-hate creature, a lifegain wall. The pay--up-to-three-times structure folds those roles into one 3/3 and lets it cover as many of them as the situation demands, and only the ones it demands. Each mode can be chosen once, so the ceiling is a clean three-for-one: crack an artifact or enchantment, exile a graveyard, and gain four life, all off the same trigger if you have the mana and the targets. The friction is that every payment is optional and additive, so the card degrades gracefully rather than sitting dead in hand: a bare body when there is nothing to answer, a two-for-one when the board obliges half of it. What keeps the design honest is that the flexibility is priced in green mana on the turn it lands, not in card advantage or a narrow deckbuilding commitment. That is the trade a toolbox creature makes to earn a place among proactive cards instead of a reactive spell you only draw when it is relevant: it is never blank, and it is rarely fully optimal. The one-per-mode limit is doing quiet load-bearing work here, since a version that let you buy the same effect three times would push the artifact-destruction mode into a swing too lopsided to leave in the maindeck.