Synergy

Synergy is a Mechanic added in Update 538.7. Synergy allows Players to select a personal buff based on their current party's selected classes, and the Player's Level Limit.. Players can swap between Synergies at any time for free. Synergy covers a very broad array of buffs that can boost just about anything in the current game.
 * Ascension : Min/Max stage decrease, passive point gain amount or timer reduction, full Exotic Gear upon Ascend, removal of AFK point reduction.
 * Quests : Timer reduction, chance to auto complete, chance to reduce the timer while adding 1 more slot, or reward increase.
 * Alchemy : Percent chance to receive a random Exotic Potion once per hour, Potion effect increase, or Potion duration increase.
 * Gear : Boost to the Shield Gear's multiplier, chance for +20 on Gear, increase to minimum that are allowed to drop, Magic Find, or max stage of Gear increase.
 * Perks : Adventurer, Archer, Berserker, Enchanter, Merchant, Ninja, Priest, Sorcerer, or Warrior's Perk may be increased.
 * Boss Souls : Gains, chance for x2 upon Prestige, or chance to steal of a Raid Boss can be chosen.
 * Raid Souls : Gains, or chance for Raid Boss to spawn.
 * Hero XP.
 * Class XP : Percent of a level finishes every minute.
 * Artifacts : The DAMAGE! Artifact's base damage can be increased.
 * Buff Level Limit.
 * Tokens : Increase to base amount, or a multiplier.
 * Round Table
 * Damage : Raw damage, Hero2Click, Critical Chance, or Critical Damage.
 * Fire Arrow : Fire DoT Damage, Stack detonation, Stack increase,
 * Event like "gift" spawn.