Valor periodically marks a nearby visible enemy with Vulnerable for 4.5 seconds, and granting standard sight of them over the duration. This cannot occur again for a few seconds, decreasing if Quinn triggers the Vulnerable.
Valor is considered to be in combat upon being damaged by an enemy basic attack or ability or damaging a unit with a basic attack or ability.
While Tag Team is active, Valor's basic attacks are considered as melee for the duration.
Quinn and Valor are effectively considered to be the same unit by the game - as a result, they will share the same champion statistics, cooldowns on their basic abilities (unlike many other shapeshifter-type spells) and will both die when one is killed.