Contagion - Acid Spell Stats & Combos

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● Acid School

Contagion

Corrodes all enemies in a wide zone and applies Contagious, causing them to explode on death.

Cooldown

70 s

Cast delay

0 s

Unlock

Lv 20

XP multiplier

×1

Element

Acid

School

Acid

Explosion

Area effect

Explosion damage

35

Explosion radius

350

Same school

Spells

Builds

Build planner

Ratata Minigun V8Can't Stop, Won't Stop, Don't Stop+125
[Bow/Minigun] Holy PigmarBombardment Obliteration Weapon makes hordes a breeze.+10
Boom Cycle; Bell Cycle {WIP}Make booms, and some bells. Use Sherif Stars' Jump Star joker to get into the middle of a horde before using Contagion + Surcharge to detonate hordes. When Contagion and Surcharge are on cooldown spam Mino to quickly recharge them (thanks to the Cast Away joker). When casting Mino it's generally best to use it like a frag grenade that just happens to be a mine (trust me it's a lot better as a grenade than a mine though still not bad). Finally, use Quad Cylinder almost strictly against weak points to rack up those juicy, juicy bells and deal good damage.+1
Nightmare Minigunner (Solo)+1
Calmlas Elemental BlasterFast clearing DPS build good for solo or group.+1
MinirunA loadout built around a Minigun primary, Dual Revolvers sidearm, Acid / Voodoo / Ice spells, 16 jokers.0

All builds Build your own

In-game preview

How it plays

Playbook

Corrosion at scale. Contagion hits every enemy in a wide zone at once and applies the Contagious status, which turns each affected target into a small bomb when they die. Against dense waves, the chain of death explosions does more work than the initial spell.

Strategy

Cast it into the middle of a pack and let the Contagious debuff multiply your damage. Clean up the weakened enemies fast to trigger as many explosions as possible before the debuff expires. Surcharge or Fireball into a Contagion-marked group is one of the more efficient burst windows in the game.

Strengths

Wide zone means it reliably hits multiple enemies per cast
Contagious death explosions scale with group size
Excellent synergy with burst spells from other schools

Weaknesses

Long cooldown requires careful timing
Death explosions require actually killing the debuffed targets

XP & Leveling

Casts to unlock

XP per cast

84

First cast bonus

+200

284 total

Casts per level

12

≈ 1 000 XP/level

Casts needed to reach school unlock levels

Level	Total XP	Casts
Level 1	0 XP	0 casts
Level 4	3,000 XP	36 casts
Level 12	11,000 XP	131 casts
Level 20	19,000 XP	227 casts
Level 35	34,000 XP	405 casts

Video playbook

Guides

Every school

Every Spell Combo in Far Far West
Cross-school combo overview - quick reference for what stacks with what.
Bull's Guidebook · Feb 25, 2026Watch ↗
Fastest Spell XP routes
Two fastest spell-XP routes - useful no matter which school you're maining.
Bull's Guidebook · Apr 30, 2026Watch ↗

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Last updated: September 6, 2026

Explosion

Same school

Bubble

Geyser

Rain

Thrower