Sawblade Slinger

Green has always been the color that answers artifacts on a body: a long line of creatures whose enter-the-battlefield trigger blows up a Cranial Plating or a Pentavus and leaves a beater behind. What distinguishes this one is the "choose up to one" clause, which turns two hyper-narrow modes into a card that is never dead. The artifact destruction and the Zombie fight are both opponent-facing and both easily irrelevant, so most designs would exile one of them to a sideboard. Here the flexibility does that work instead: against an artifact deck you crack a permanent, against a graveyard-fueled undead deck you point the 4/3 at their best creature, and against anything else you decline both and cast a plain 4/3. The four mana and the modest toughness are the tax; the modal trigger is the free upside stapled on top. That Zombie clause betrays where this was built to matter, an environment where undead were the recurring threat and this was matchup-specific hate most cards would never main-deck. Folding it into an ETB you can safely ignore is the whole trick: the card asks nothing of you in the games where its answers do not apply, and quietly overperforms in the two matchups it was designed to punish.