In my experience with Tyr, his fighter revive ability has never triggered when his special revive ability has been active. Tyr is the only fighter with a self revive buff, so make of this what you will.
Base attack stat as shown in the card (includes emblems) + troops + defender bonus (if the summoner summons minions).
Game checks for Immortal buff first
If no immortal, it checks if Fighter Revive talent triggers
If it doesn’t trigger, it checks for reborn effects (bruise bro , druagr or zombie )
@Guvnor just FYI I edited your post to indicate the correct revive precedence (immortal self revive buff is checked before Fighter talent always). I noted this while I was testing Tyr back when he was introduced in beta first.
For the fighter talent, I’ve noticed in raid tournaments vs Muggy that he has revived before via Fighter talent, without his chameleon mode taking effect even though his buff is active.
As another piece of information, revive buffs don’t stack together either. So don’t try using Marie with Tyr:
Numeric for effects like Ranvir’s and Miki’s.
Proportional only applies for skills that rely on the enemy HP (such as Kage’s or Fenrir’s skills).