At a glance
Guide notes- Role
- Zone-control Mystic — Blizzard for Frost damage plus team Shields
- Best for
- Control boards that want a long fight, Frost stacks, and a Mystic who also peels with Shields
- Strength
- Blizzard taxes everyone standing in the zone every second while shielding allies inside — rare dual offense/defense cast
- Weakness
- Needs Mana Regen / cast uptime and a board that keeps enemies in the storm; short burst fights undersell him
Current Tier Ranking
Full Guildrun tier listShield and zone control that wins when packs stay inside the plan.
Recommended build: Mystic Sustain Field
How to play
Decision notes for shops and formation — not a copy of the in-game panel.
Early
Pick Gustav when you can protect a back-mid caster. He is not your first-contact tank. Buy Mana Regen before greed Magic.
Mid
Choose the economy: Investor (Shard/Mana Regen investment), Glacier (self-centered Blizzard + Defense scaling), or Avalanche (cast → Shard → Mana Regen/Magic). Match relics to that branch.
Late
Keep Blizzard uptime high. Stall paths love Glacier; Shard engines love Avalanche/Investor. Do not starve him of casts.
Positioning
Back-mid so the Blizzard covers the main fight lane. Allies who stand in the storm get Shields — clump intentionally, not randomly.
Base Stats
- Max HP
- 700
- Max Mana
- 150
- Starting Mana
- 45
- Mana Regen
- 8
- Defense
- 30
- Attack
- 0
- Magic
- 0
- Attack Speed
- 0
- Crit
- 15
- Move Speed
- 1.5
- Attack Range
- 3
- Mana Lock (s)
- 1
- Base Attack Speed
- 0.36
- Base Attack Damage
- 22
Ranks C → S
Draft a duplicate or use an eligible campfire event to rank up. Art below shows each rank portrait for Gustav.
Rank C
Base kit — the active ability is equipped and the starting stat line applies.
- C — start with the active ability and base kit.
- B — lock one of three specialization paths.
- A / S — take the rank stat package, then draft class modifiers.
Abilities
Kit text from the Demo dump, plus short notes on how to play around each ability.
Active
Blizzard
activeCreate a Blizzard for 5.1 seconds. Each second, inflict 5.1 (+ 98% Mana Regen ) Frost and deal 5.1 (+ 100% Magic ) damage to enemies inside the Blizzard. Shield Heroes inside it for 1 (+ 0% Magic ).
In practice: Win condition is zone uptime. If enemies leave the storm, you paid for a weak DoT. Place the fight so packs walk through it.
Passives
The Investor
passiveAt start of combat, spend 1 Shards to give Gustav an Investment. Give all Heroes 0 Mana Regen per Investment. Backup. Every 0 Investments, gain 5 Shards.
In practice: Lean into Shard / Mana Regen — itemize the stats this ability already scales with.
The Glacier
passiveBlizzard applies 1 per 40 Defense more Shields and always targets Gustav. After Stall (25 and Stall 1), permanently gain 2 (+ 1 per 50 rank ) Defense.
In practice: Values Stall tempo — stall-trigger relics and a board that lives into mid-fight pay off.
The Avalanche
passiveOn cast, gain 1 Shard. On Shards generated, gain 1 Mana Regen and 5 Magic.
In practice: Lean into Shard / Mana Regen / Magic — itemize the stats this ability already scales with.
Specializations
Rank B paths that reshape how Gustav scales through a run.
The Investor
At start of combat, spend 1 Shards to give Gustav an Investment. Give all Heroes 0 Mana Regen per Investment. Backup. Every 0 Investments, gain 5 Shards.
When to pick: Economy/support path — spend Shards to invest Mana Regen into the team. Take when you are greedy for long-run scaling, not immediate clear.
The Glacier
Blizzard applies 1 per 40 Defense more Shields and always targets Gustav. After Stall (25 and Stall 1), permanently gain 2 (+ 1 per 50 rank ) Defense.
When to pick: Selfish tank-Mystic hybrid: Blizzard sticks to Gustav and Stall grows Defense. Take when he is your peel anchor.
The Avalanche
On cast, gain 1 Shard. On Shards generated, gain 1 Mana Regen and 5 Magic.
When to pick: Cast engine: more Shards and Mana Regen/Magic on generation. Take when you can spam Blizzard every fight.
Best relics & synergies
Relics that overlap Mystic keywords and Gustav's ability tags. Top matches include a short “why”.
Mystic's Prosperity Filigree
Whenever a Mystic casts after Stall (1), they give the nearest Hero Magic and Attack equal to 0% of their Mana Regen.
Why: Mana/economy style Mystic piece — helps cast frequency.
Arcane Amplifier
Mages and Mystics gain 50 Magic and 4 Mana Regen.
Why: Fallback Magic amp when class-specific relics are missing.
Arcane Backup Prism
Heroes gain 1 Magic per rank of each Mage in the reserves and 1 Mana Regen per rank of each Mystic in the reserves.
Why: Matches Gustav's Magic / Mana Regen / Mystic tags.
Mystic's Abundance Engine
Heroes gain 8 Mana Regen. Whenever a Mystic Shields a Hero, give that Hero lasting Shields equal to 100% of the Shield applied.
Mystic's Barrier Banner
Whenever a Mystic casts, they Shield the lowest-health Hero equal to 5% of their Mana Regen.
Why: Keeps the Mystic Shield fantasy online while Blizzard peels allies in the zone.
Mystic's Enchanted Reflection
Mystics gain 4 Mana Regen and 25 Magic.
Shard
Crystal charges spent or consumed for bonus effects.
54 relics · 12 abilities · 3 classes
Crit
Critical strikes and effects that trigger when attacks crit.
49 relics · 19 abilities · 3 classes
Rush
Tempo windows that amp allies for a short burst of aggression.
41 relics · 16 abilities · 4 classes
Stall
Control and delay tools that interrupt enemy pace.
39 relics · 22 abilities · 4 classes
FAQ
Common questions when this hero shows up in the shop or draft.
Is Gustav good in Guildrun?
Excellent on control / Stall / Shield boards. Bad if you need an early pure damage carry and cannot keep enemies in Blizzard.
What class is Gustav?
Mystic. Role focus: zone-control Frost caster who also shields heroes inside Blizzard.
What relics work with Gustav?
Mystic Barrier / Prosperity pieces, Arcane amplifiers, and Stall tools if you took Glacier.
How do you play Gustav?
Stack Mana Regen, drop Blizzard on the main lane, stand allies in the storm for Shields, and specialize toward either peel (Glacier) or cast economy (Avalanche/Investor).
Tips
- If packs kite out of Blizzard, reposition Gustav or your tank — do not only buy Magic.
- Investor is a run plan, not a panic button; take it when Shard spending is already comfortable.
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