Disclaimer: The effect below does not exist. It's hypothetical.
Another way you might be able to "remove the terminal state" that is not directly related to the save effect:
Save a character. Then, discard one attachment from play. (or all attachments from saved character)
The above could remove Crown of Gold which would be removing the kill effect at 0.
Otherwise, we will be significantly limited to what will save characters from terminal effects if "then, give +X STR" is going to be the only way. I'd hope that we can have some interesting interactions that would count as remedying the terminal state.
This is an interesting one! What if there are two attachments? A Crown of Gold killing your dude and a Seal of the Hand sitting on Drogo? The save won't necessarily save your dying character - you might prefer to discard the Seal and let your dude die. So the save effect won't necessarily save - although it certainly could. I don't know how the rules would interface with that situation. Would it be different if there the Crown of Gold was the only valid attachment?