Everquest 2: Everquest 2 has a fairly dynamic combat system and each individual action can pretty much change the outcome of the game in solo play. While locked in combat all regeneration stops. ((With the exception of varios tradition and item regenerations)) Combo's are imperitive to each class for survival. As they allow you to perform heroic opurtunities(HO). These HO's can make or break a battle. However the downside to these HOS is they are completely archetype based and any subclass will have the same HO of there archetype. Very much limiting diversability. It also has a negative drawback of spamming these HOS to complete the fight most effectively. At the end of the fight your HP/Mana begins accelerated growth.