dave2008
Legend
If that is really needed (I mean sometimes the players just win right), you have:Those are fine and all, but they don't cover all scenarios. If your player Polymorphs a creature it no longer has Elite Recovery to fall back on, for instance. I kind of like how BG3 handled it: instead of choosing to succeed, the Legendary Resistance adds 10 to the save result.
Immutable Form. The golem is immune to any spell or effect that would alter its form.
It doesn't even effect the monsters CR!