Ultimatum

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Ultimatum or known as Trials of Chaos, is the league mechanic of Ultimatum league.

Player need to select a mod to increase the difficulty of the trial, and then perform various object such as survive, defeat waves of enemies, stand in the stone circles, protect the altar, etc. After finish a wave successfully, player can choose to leave the trial with the loot, or enter the next wave.

Ultimatum can be encounter in most combat (non-town, non-hideout, non-PVP) area of the game , and can be encountered via misc map item Inscribed Ultimatum.

The final wave of the map version of the Trials of Chaos, may sometimes replaced with the boss fight against the Trialmaster himself.

Modifiers

Modifier	Image	Tier	Effect
Ailment and Curse Reflection		I	Curses and Non-damaging Ailments you apply are Reflected
Blistering Cold		I	Frozen pustules will periodically appear and explode when you approach
		II	Many frozen pustules will periodically appear and rapidly explode when you approach
		III	Many frozen pustules will periodically appear, chill you, and rapidly explode when you approach
Bonus Chaos Damage		I	Monsters deal 30% of Physical Damage Added as Chaos Damage
Buffs Expire Faster		I	Buffs expire three times faster on players
Choking Miasma		I	A cloud that deals Chaos Damage over Time will follow you
		II	A large cloud that deals Chaos Damage over Time will follow you
		III	A large and fast cloud that deals Chaos Damage over Time will follow you
Escalating Damage Taken		I	For the remainder of the encounter, damage taken will slowly increase by 1% per second, up to 50%
Escalating Monster Speed		I	All Monsters gain 2.5% increased attack, cast, and movement speed per second they are alive, up to 50%
Hindering Flasks		I	Using a Flask Hinders you by 50% for 4 seconds
Less Cooldown recovery		I	Cooldowns take five times longer to recharge
Lessened Reach		I	Players have 50% less Area of Effect and Projectile Speed
Lightning Damage from Mana Costs		I	Take 50% of Mana costs as Lightning Damage
		II	Take 200% of Mana costs as Lightning Damage
		III	Take 1000% of Mana costs as Lightning Damage
Limited Arena		I	The encounter area will be much smaller
Limited Flasks		I	Using a Flask removes any existing Flask effects
Occasional Impotence		I	You and your Minions deal no damage for 2 seconds every 8 seconds
Raging Dead		I	Skulls will appear that spit Fire if you remain near them
		II	Many skulls will appear that spit Fire if you remain near them
		III	Many skulls will appear that pursue you and spit Fire when near you
Random Projectiles		I	Your Projectiles fly in random directions Monsters fire additional Projectiles
Razor Dance		I	Blades will periodically appear and fly at you, applying Corrupted Blood on Hit
		II	Many blades will periodically appear and fly at you, applying Corrupted Blood on Hit
		III	Swarms of blades will periodically appear and fly at you, applying Corrupted Blood on Hit
Reduced Recovery		I	30% Reduced Life, Mana, and Energy Shield Recovery Rate
		II	60% Reduced Life, Mana, and Energy Shield Recovery Rate
Restless Ground		I	Patches of Unhallowed Ground will appear that Hinder players and cause slain Monsters to resurrect as Phantasms
		II	Many patches of Unhallowed Ground will appear that Hinder players and cause slain Monsters to resurrect as Phantasms
		III	Many patches of Unhallowed Ground will appear that Hinder players and cause slain Monsters to resurrect as Ruin
Ruin		I	A Monster type will apply Ruin with its special ability. Fail on reaching 7 Ruin
		II	A Monster type will apply double Ruin with its special ability. Fail on reaching 7 Ruin
		III	Two Monster types will apply double Ruin with their special abilities. Fail on reaching 7 Ruin
Siphoned Charges		I	Lose a Power, Frenzy, and Endurance Charge every second Monsters gain Power, Frenzy, and Endurance Charges on hit
Stalking Ruin		I	An invulnerable shade stalks you, inflicting Ruin with its Melee Attacks. Fail on reaching 7 Ruin
		II	An invulnerable shade stalks you, gaining speed and inflicting Ruin with Melee Attacks and Spells. Fail on reaching 7 Ruin
		III	An invulnerable shade stalks you, gaining further speed and inflicting Ruin with Melee Attacks and powerful Spells. Fail on reaching 7 Ruin
Stormcaller Runes		I	Runes will appear that will call deadly Lightning storms if you remain in them
		II	Large runes will appear that will call deadly Lightning storms if you remain in them
		III	Many large runes will appear that will call deadly Lightning storms if you remain in them
Totem of Costly Might		I	An invulnerable Totem will appear that imbues both its allies and its enemies with Speed and powerful Physical Damage benefits, but causes enemies to take 10% of their maximum Life and Energy Shield as Physical Damage per second
Totem of Costly Potency		I	An invulnerable Totem will appear that imbues both its allies and its enemies with Speed and powerful Elemental Damage benefits, but causes enemies to take 15% of their maximum Life and Energy Shield as Fire Damage per second
Treacherous Auras		I	Your Auras that affect Allies also affect Enemies
Unlucky Criticals		I	Your Critical Strike Chance is Unlucky

Version history

Version	Changes
3.14.1	"Stand in the Stone Circle" Ultimatum encounters now have larger circles. Monsters in the "Stand in the Stone Circle" Ultimatum encounters have had their experience and drops improved to bring them more into line with other Ultimatum encounters. Capped the number of rare Monsters that can spawn per wave during Ultimatum encounters. Entrances to subareas (such as a Vaal Side Area) are now temporarily disabled while inside an Ultimatum encounter. Enabled the Razor Dance Ultimatum modifier. Added a short grace period when being teleported to The Trialmaster's arena. Improved various visual effects in The Trialmaster encounter. Fixed a bug where Monsters could sometimes fail to disappear after completing an Ultimatum encounter.
3.14.0	Introduced to the game.