Quote Originally Posted by Calvnor View Post
These are not definitive answers, some are just patronizing speculated guesses. I'm looking for certainty, from someone who's actually tested it. Keep in mind that these descriptions are translations, not even first generation.
Convalescence affects any Healing magic cast upon you.
As a PLD, this includes your own "Cure I"s as well as most healing spells cast on you by someone else (both players and NPCs)

It does NOT affect Bloodbath or Mercy Stroke, both of which return a constant amount of HP that cannot be buffed or debuffed.
Likewise, when cross-classed it does not affect WAR's Inner Beast/Storm's Path/Thrill of Battle.
There are conflicting reports about whether it affects "Second Wind". Personally, whenever I tested it on my Marauder back in the day, I never noticed any difference.

Treat it as another reliable Survivability Cooldown. As long as you don't get one-shot, it basically equates to slightly better damage mitigation than Rampart.