Was thinking about Unyielding Spirit, and it feel like it having the following effect may solve some issues, while keeping its identity: Grant an ally "When I die, revive me."

I feel like the intent of the card was to synergism with Scout units, as they can attack twice as often, so you can get a lot of use out of them if they don't die. This was greatly overshadowed by pairing it with Fiora though. With this change it stops giving it to Fiora from just being "free"(if she dies with it, you don't lose her, but it resets her counter), but it still allows it to have its synergy with scouts.

Additionally, it allows for "blocking" an Unyielding unit by killing it with damage, adding a little more(albeit still bad) counter play.

It does open up some other synergies with things like Grizzled Ranger, where he will just endlessly summon Loyal Badger bears. I personally think that is a cool interaction and more interesting that current Unyielding Fiora.