Detained by Legionnaires

Functionally a reskin of Pacifism: for one generic and one white mana, an Aura that turns a creature into a spectator, unable to attack or block. This has been white's answer to a threat since the earliest sets, and the logic hasn't changed: it never touches toughness, indestructibility, or anything else about the stats, because it never tries to kill anything. It just switches off combat. That trade cuts both ways. No amount of buffed toughness or protection-from-red matters to it, and it lands cleanly on things damage cannot answer. But the creature stays on the battlefield with everything intact: abilities, death triggers, the works. A sacrifice outlet, a blink, or a bounce spell turns a neutralized creature live again, and the Aura itself falls to enchantment removal (or to protection from white, which stops it on the stack and slides it off if granted later). It does nothing about a creature that never wanted to fight in the first place, an activated ability doing all the damage, or a body that just needs to sit there and tap for value. A clean, cheap neutralizer whose only real question is whether your deck can afford to leave the thing across the table breathing.