Heroic Intervention

Green's protection had always been narrow and reactive at the individual level: Ranger's Guile shields one creature, Vines of Vastwood pumps and protects a single attacker, and neither lifts a finger when a Wrath of God comes down across the board. This widens the umbrella to every permanent you control in one two-mana instant, and stacks hexproof on top of indestructible so it answers both the destroy-everything sweeper and the precision removal aimed at your linchpin. The two halves cover different failures. Indestructible lets your board walk through destroy effects, from a targeted Murder to a mass Damnation; hexproof addresses the removal that indestructible does nothing about, stripping the legal targets off a Path to Exile that would exile your best creature outright, or a bounce spell that returns it to hand. Neither keyword alone plugs both holes, which is why the pairing matters. The instant speed is the whole point: held up at the end of an opponent's turn or fired in response to the spell already on the stack, it lets a board that should have died survive intact. What it costs for that breadth is that it is purely reactive, a one-shot insurance policy that demands you already have permanents worth protecting and the read to spend it at the right window, with no recursion to bail you out if you guess wrong. It represents green getting a clean, in-color way to say no to removal, the kind of board-wide protection that white and blue had largely kept to themselves through counters and prevention.