Gemrazer

Naturalize, the mono-green artifact-and-enchantment answer that has traded card-for-card for decades, always paid for its cheapness by doing nothing else: it cracks a target and leaves the board no wider. This Beast bolts that same disruption onto a keyword that lets you choose when to fire it. Cast it flat and you get a 4/4 with reach and trample, no destruction attached; the removal only fires on the mutate event. But mutate turns fixed removal into modular removal. Instead of resolving it once as a fresh spell, you can graft it over or under a non-Human creature already on the battlefield, or stack a growing Gemrazer pile by mutating other bodies into it, and every mutate resolution repeats the destroy clause. The pile keeps swinging with reach and trample intact, and each re-mutation is another opponent's artifact or enchantment gone, timed to the moment they commit the permanent worth killing. That is the wrinkle worth sitting with: mutate converts a one-shot answer into an on-demand one, so a single card supplies both the utility removal and a mounting clock. The tension is real. You need a legal creature to build on and a fresh mutate spell each time you want the trigger again, which is precisely the recommit-or-cast pressure the mechanic was built around: the destroy clause is only as repeatable as your willingness to keep spending cards to earn it.