How Gustav fits a formation
Gustav is a Mystic built around zone-control mystic and shield engine. Choose whether Gustav stays protected in the rear or becomes the center of a defensive Blizzard formation.
Gustav base stats
Derived comparison values
EHP and EOFF are comparison composites; Sec / cast estimates a passive mana-fill interval. They help compare records but are not separate in-game stats.
Gustav ranks
Draft a duplicate of Gustav or use an eligible campfire event to rank up. Rank B chooses a fixed specialization; Rank A and S draft from the active class modifier pool.
Rank C
The base stat line starts with the active ability equipped.

Blizzard
Create a Blizzard for 5 seconds. Each second, inflict 1 (+ 1 per 8 Mana Regen ) Frost and deal 10 (+ 50% Magic ) damage to enemies inside the Blizzard. Shield Heroes inside it for 10 (+ 75% Magic ) .
Rank B
The first rank-up also chooses one of three fixed specializations. A path can add a class and change later offers.

The Investor
At start of combat, spend 4 Shards to give Gustav an Investment . Give all Heroes 2 Mana Regen per Investment . Backup . Every 5 Investments, gain 30 Shards .

The Glacier
+ TankBlizzard applies 100% Defense more Shields and always targets Gustav. After Stall ( 25 and Stall 50 ), permanently gain 2 (+2 per rank ) Defense .

The Avalanche
On cast, gain 1 Shard . On Shards generated, gain 1 Mana Regen and 5 Magic .
Rank A
Gain the stat package above, then choose from modifiers generated by Gustav's active class set.
Rank S
Gain the stat package a final time and draft the last class modifier to complete the current Demo build.
Possible class modifiers
Later ranks offer modifiers from the hero's active class pool. Multiclass heroes receive a split offer set, so both class groups should contain useful outcomes before committing.
Mystic modifiers · 14
- Rolling ConduitMystics gain 1 Mana Regen for each reroll this game. Backup .
- Shard WeaverEvery other cast, gain 2 Shards .
- Sideline SupportBackup Only: At start of combat, gain 5 Shards and give Heroes 500 (+500 per rank ) Shields .
- Stall BatteryOn Stall trigger, gain 1 Shard and give Heroes 3 Mana Regen . Backup .
- Stall EnlightenmentAfter Stall ( 30 ), permanently gain 2 Mana Regen .
- Shield MagnificationWhen this Hero applies Shields , apply 50 % more Shields .
- Empowered MagicOn cast, give other Heroes 100% Mana Regen Attack and 100% Mana Regen Magic .
- Shield FormationAt start of combat, give this Hero and adjacent Heroes 250 (+ 250% Magic , + 1000% Mana Regen ) Shields .
- Sideline EmpowermentBackup Only: At start of combat, give Heroes 4 (+4 per rank ) Mana Regen , 50 (+25 per rank ) Attack , and 50 (+25 per rank ) Magic .
- Protective MagicOn cast, give the lowest percent health Hero 100 (+ 500% Mana Regen ) Shields .
- Arcane GrowthOn cast, permanently gain 1 Magic .
- Debuff AmplificationOn cast, increase the amount of each Debuff on enemies in range by 50% Mana Regen .
- Debuff ChannelingOn cast, gain 1 Mana Regen for each type of Debuff on all enemies.
- Debuff ProtectionOn cast, give the lowest percent health Hero 1 Shield per 2 Debuffs on all enemies.
Mystic / Tank modifiers · 2
- Stall CertaintyStall abilities trigger 6 seconds faster. Backup .
- Stall CertaintyStall abilities trigger 6 seconds faster. Backup .
Tank modifiers · 13
- Second WindAfter Stall ( 35 ), heal 100 % Max HP , gain 100 Mana , and gain + 20 % Defense .
- Stalled DefenseOn Stall trigger, gain 45 Defense .
- ResoluteWhen auto attacked, gain 1 Defense .
- Freezing PresenceTanks gain + 33 % Defense against damage from enemies with Frost . Backup .
- SpikedWhen auto attacked, deal 50% Defense damage to adjacent enemies.
- The Best Offense...Tanks gain 1 Attack and 1 Magic per 3 Defense they have. Backup .
- Freezing AuraWhen auto attacked, inflict 1 (+ 1 per 100 Defense ) Frost on the attacker (Max: 6 ).
- Freezing RestorationWhen auto attacked by an enemy with Frost , gain 2 HP/S .
- Poisonous AuraWhen auto attacked, inflict 1 (+ 1 per 250 Defense ) Poison on the attacker (Max: 3 ).
- Poisonous RestorationWhen auto attacked by an enemy with Poison , gain 2 HP/S .
- Poisonous PresenceTanks gain + 33 % Defense against damage from enemies with Poison . Backup .
- ProtectorThis Hero gains + 20 % Defense for each enemy targeting it.
- Rear SupportAt start of combat, if this Hero is in the back row all Heroes gain + 75 % Defense .
Tank / Vanguard modifiers · 1
- DistractionAfter Stall ( 10 , Stall 20 , Stall 30 , Stall 40 , and Stall 50 ): Taunt all enemies.
How to build around Gustav
- Preserve the first job.Make sure Gustav can already perform the role described above before adding a second engine.
- Choose a repeatable trigger.Match the specialization to an effect the current team can activate every fight.
- Protect the delivery condition.Range, mana, survival, and target access usually matter before another damage multiplier.
- Read the later pool.Choose an added class only when its Rank A/S modifier outcomes support the same plan.
Related equipment
Gustav lore
“I've been wanting to test a scenario like this.”
Guild profile
Guild Aegis Global - “Certainty in an uncertain world.” Profit is power. Money makes money and everything on the way will be debuffed.
Background
He came up through academia, with three published papers before he turned twenty one, and Aegis hired him straight out of his post-doc. He runs the numbers behind crystal refining, making each batch yield more usable energy than the last, and his models are why Aegis's supply chain has stayed a step ahead of every competitor for six straight quarters.
Motivation
He wants a new challenge. Yours presents an interesting scenario. He'd like to see how it plays out.
