Runes are one of the fastest ways to boost damage in Broken Blade. The catch is simple: good runes cost time, keys, coins, or all three.

If you waste 70 boss keys on a boss you barely damage, you slow your account down. If you farm the right boss, stack coins, and buy smart, your damage jumps much faster.

This guide cuts straight to what matters: where each rune drops, what it does, what to farm first, and which runes are actually worth chasing.

• Best Broken Blade Runes Ranked
• All Rune Locations in Broken Blade
• Nidavellir Rune Drops and Boss Coin Costs
• Best Way to Farm Boss Keys and Boss Coins
• Which Rune Should You Farm First?
• Soul Bomb Rune: Cheap Starter Option
• Hellfire Rune: Best Early Value
• Thunder Rune: Simple Burst Damage
• Blizzard Rune: Best Farming Rune Before Shadow Clone
• Shadow Clone Rune: Best Rune in Broken Blade
• Skyspire Runes: Crit Rune and Mirage Blade
• Crit Rune
• Mirage Blade Rune
• Best Greed Shop Buying Priority
• Best Rune Strategy for Fast Progression
• Common Rune Farming Mistakes
• FAQ
• What is the best rune in Broken Blade?
• Where do I get runes in Broken Blade?
• What rune should I buy first with boss coins?
• Is Blizzard better than Thunder?
• How do I get Mirage Blade Rune?
• Summary

↖ Best Broken Blade Runes Ranked

Here is the short version. If you only care about power, start here.

Best overall: Shadow Clone.

Best farming rune before Shadow Clone: Blizzard.

Best early value: Hellfire.

Best late-game targets: Crit Rune and Mirage Blade.

↖ All Rune Locations in Broken Blade

Runes come from two places: Nidavellir and Skyspire.

Nidavellir is your main rune farm. Skyspire is late-game. Do not rush Skyspire if your damage is still weak.

↖ Nidavellir Rune Drops and Boss Coin Costs

Most players should build their rune setup in Nidavellir first. You can either farm rune drops from bosses or buy several runes from the Greed Shop with boss coins.

Boss keys are expensive. Treat them like stamina. Spend them only where your clear speed makes sense.

↖ Best Way to Farm Boss Keys and Boss Coins

The cleanest farming loop is:

1. Farm Mythical Chests at Explosion.

2. Farm Mad Dog for chest stacking.

3. Open chests in bulk for boss keys.

4. Use keys on bosses you can kill fast.

5. Stack boss coins.

6. Buy the rune if RNG refuses to cooperate.

This is the reliable route. Chasing rare drops only works if your boss clears are fast.

If you need five minutes to kill a Nightmare boss, you are not farming. You are donating keys.

↖ Which Rune Should You Farm First?

Your first goal should not be best rune in the game. It should be best rune I can get without wasting resources.

My practical pick: skip Soul Bomb if you can afford Hellfire soon. Hellfire is the better first serious rune.

↖ Soul Bomb Rune: Cheap Starter Option

Source: Merope on Nightmare

Cost: 40 boss keys

Shop: 1,000 boss coins

Effect: Summons 3 soul bombs, each dealing 0.5x M1 damage

Soul Bomb is fine for early progression. It gives extra damage and is cheap compared with other runes.

But it falls off quickly.

Use it if you need your first rune. Skip it if you are close to buying Hellfire or Thunder.

↖ Hellfire Rune: Best Early Value

Source: Magador / Ragnarok on Nightmare

Cost: 45–50 boss keys

Shop: 1,200 boss coins

Effect: Explosion dealing 1.8x M1 damage

Hellfire is the first rune that feels good. It gives clean burst damage and does not cost much more than Soul Bomb.

If you are farming boss coins, this is usually the first rune worth buying.

Best use: early bossing, mid-game farming, general DPS.

↖ Thunder Rune: Simple Burst Damage

Source: Galleros

Cost: around 55–60 boss keys

Shop: 1,400 boss coins

Effect: Lightning strike dealing 2x M1 damage

Thunder is straightforward. It hits harder than Hellfire in one strike.

It is good when you want burst damage, but it does not offer the farming comfort of Blizzard or the insane value of Shadow Clone.

Buy it if you want a direct DPS upgrade. Skip it if you are saving for Blizzard.

↖ Blizzard Rune: Best Farming Rune Before Shadow Clone

Source: Velik / Niveron

Cost: around 65 boss keys

Shop: 1,600 boss coins

Effect: Ice aura dealing M1 damage every second for 5 seconds

Blizzard is strong because it keeps dealing damage while you continue attacking.

This matters in mob farming. It also works well on bosses that stay near you.

If you farm groups often, Blizzard gives better practical value than Thunder. It is not always the highest burst, but it clears smoother.

Best use: mobs, farming routes, stable boss fights.

↖ Shadow Clone Rune: Best Rune in Broken Blade

Source: Veyrath

Cost: 70 boss keys

Effect: Summons 2 shadow clones, each dealing 3x M1 damage

Shadow Clone is the top rune because it adds attackers, not just one damage proc.

That means more sustained DPS. More pressure. Faster boss kills.

The downside is Veyrath. He costs 70 boss keys and has the highest HP among the Nidavellir bosses. If your damage is low, farming him is painful.

Use this rule:

• If you kill Veyrath fast, farm him.
• If you struggle, farm boss coins first.
• If your build is weak, get Blizzard or Thunder before chasing Shadow Clone.

Shadow Clone is the goal. Not always the first step.

↖ Skyspire Runes: Crit Rune and Mirage Blade

Skyspire has two exclusive runes. You cannot buy them from the Greed Shop.

You need a Sky Key to enter Skyspire. Sky Keys come from bosses in Jotunheim.

↖ Crit Rune

Crit Rune is worth farming once you can clear Layers 71–100 consistently.

It does not summon explosions or clones. Instead, it improves your damage scaling through critical hits.

That means it gets better as your base damage gets stronger.

↖ Mirage Blade Rune

Mirage Blade drops from Layers 191–200.

It summons magical swords in two patterns:

• Swords surround you, then fly outward.
• Swords fly in one direction for focused damage.

This is an endgame rune. Do not farm it early. If you cannot reach those layers consistently, build with Nidavellir runes first.

↖ Best Greed Shop Buying Priority

If you are spending boss coins, buy smart.

If you already have decent damage, save for Blizzard. If you are still weak, buy Hellfire first and farm faster.

↖ Best Rune Strategy for Fast Progression

Use this route if you want efficient progression:

1. Farm Mad Dog at Explosion.

2. Stack Mythical Chests.

3. Open them for boss keys.

4. Farm bosses you can clear quickly.

5. Buy Hellfire or Blizzard.

6. Push toward Shadow Clone.

7. Move into Skyspire for Crit Rune.

8. Farm Mirage Blade only when Layers 191–200 are stable.

The key is clear speed. A weaker boss killed fast beats a stronger boss that drains time and keys.

↖ Common Rune Farming Mistakes

If your rune farming feels bad, check your kill time. Slow kills usually mean the target is wrong.

↖ FAQ

↖ What is the best rune in Broken Blade?

Shadow Clone is the best overall rune. It summons 2 clones, and each clone deals 3x M1 damage. It gives the strongest sustained DPS for most builds.

↖ Where do I get runes in Broken Blade?

You get runes from Nidavellir and Skyspire. Nidavellir has Soul Bomb, Hellfire, Thunder, Blizzard, and Shadow Clone. Skyspire has Crit Rune and Mirage Blade.

↖ What rune should I buy first with boss coins?

Buy Hellfire first if you need early power. Buy Blizzard first if your damage is already decent and you want better farming efficiency.

↖ Is Blizzard better than Thunder?

For farming, yes. Blizzard deals damage over time and helps clear mobs. Thunder is better for quick burst damage against single targets.

↖ How do I get Mirage Blade Rune?

Mirage Blade drops from Skyspire Layers 191–200. You need a strong build and consistent high-layer clears. It is not available in the Greed Shop.

↖ Summary

The fastest way to get stronger in Broken Blade is not blind rune farming. It is smart resource use.

Start with Hellfire if you need early damage. Move into Thunder or Blizzard depending on your needs. Push for Shadow Clone once you can handle Veyrath efficiently. After that, farm Skyspire for Crit Rune and eventually Mirage Blade.

Best overall rune: Shadow Clone.

Best farming rune before Shadow Clone: Blizzard.

Best early purchase: Hellfire.

Biggest trap: wasting boss keys on bosses you cannot kill fast.