Rain - Acid Spell Stats & Combos

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● Acid School

酸雨

召唤酸雨，腐蚀大片区域内的敌人

Cooldown

120 s

Cast delay

0 s

Unlock

Lv 35

XP multiplier

×0.75

Element

Acid

School

Acid

Explosion

Area effect

Explosion damage

35

Explosion radius

700

Same school

Spells

Builds

Build planner

Solo/Duo NightmareI tested the build with many variations, and on Nightmare difficulty this proved to be the most reliable and most stable setup. While it holds its own even solo, the true potential of the abilities is especially effective in Duo. The synergy between the gear and abilities guarantees constant damage and almost indestructible survivability.+446
Magic Minigun V4Minigun but with magic~+44
One Man Army(Latest update: Version 0.2.0.4) This build focuses on the spells and their synergies as well as your jokers. It shines the most whether solo or co-op not only due to its ability to clear hordes easily, but also with its ability to keep yourself healthy. I have tried and tested this build in both Nightmare and Very Hard difficulties with my personal record of 2,812 kills, 84,000+ damage, and 70,000+ EXP (shotgun and revolvers combined) on Nightmare difficulty so far. It is really up to you on how you will use the spells but! I recommend you use Wisp first, shoot it (using the revolvers) to make it blue, activate acid rain on where most enemies are, and use Blizzard last. Watch the spells take out enemies before you can even say "Yeehaw". (Feel free to swap out Helping Hand joker with any).+23
🐂El Rápido💨Shotgun & Bow+21
Aiming Burst🎯Quad Cylinder & BowJoker Aiming Burst got some interesting changes and feels really fun to play now.+21
Poney's High Sustain Quad CylinderIt's the setup I’ve been using for a long time now, both in Solo/Co-op, up to Nightmare. Thunderstrike and Rain for wave clear and regain lot of health. Doll for emergency, or to revive teammates. Bottle Crate for emergency healing, or to help teammates. Quad Cylinder with a speedster build. Move fast, shoot fast, jump high and never run out of ammo with Ammo Supply. With this setup you are the one who will survive, the one who will never disappoint.+15

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In-game preview

How it plays

Playbook

The Acid school's big curtain call. Rain calls down sustained acid across a wide area for its full duration, layering corrosion on everything caught underneath. It's not subtle and it's not fast to recharge, but nothing else in the school covers this much ground continuously.

Strategy

Drop it on objectives, doorways, or boss arenas where you know enemies will be forced to stand still. The sustained damage is most effective when targets can't leave the area. Combine with Contagion beforehand to maximize the debuff overlap.

Strengths

Widest area coverage in the Acid school
Sustained damage over duration rather than one burst
Extremely effective on objective-based encounters

Weaknesses

Longest cooldown in the school
Moving enemies can walk out of the rain area

XP & Leveling

Casts to unlock

XP per cast

108

First cast bonus

+200

308 total

Casts per level

10

≈ 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	28 casts
Level 12	11,000 XP	102 casts
Level 20	19,000 XP	176 casts
Level 35	34,000 XP	315 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 · 2026年2月25日观看 ↗
Fastest Spell XP routes
Two fastest spell-XP routes - useful no matter which school you're maining.
Bull's Guidebook · 2026年4月30日观看 ↗