9 Best Method to Farm Trait Rerolls in ASTD X (All Star Tower Defense X)

Trait rerolls—or Trait Burners, as they’re oddly named in ASTD X—are incredibly valuable. They let you reroll traits on your best units, which can make or break your progress in the game. The issue? They’re not easy to get, especially for free-to-play players. But don’t worry—this guide breaks down the most effective methods to get your hands on trait rerolls in ASTD X, including the ones that don’t require you to grind endlessly. Check out our ASTD X Tier List for those that are new to the game.

1. Macro Story Mode to Farm XP & Level Rewards (Best AFK Method)

If you’re the type who prefers passive grinding, macroing story mode is easily one of the most efficient methods. While it might take time, it gives you level rewards, which include a good amount of trait rerolls:

• Level 30: 10 rerolls
• Level 35: 25 rerolls
• Level 40: 10 rerolls

Although the XP required is quite high (278,000 XP for higher levels), you can slowly build it up just by AFKing and letting the macro do the work. This is a solid option for those who don’t want to be actively grinding all the time.

2. Grind Expert Challenges (Most Consistent Active Method)

Challenges—especially the Expert Mode ones—are your next best bet. Some expert challenges offer up to a 30% chance to earn a trait reroll. Even better, they rotate every 30 minutes, so you can hop into the next one as soon as the timer resets.

• Each run takes around 5–6 minutes
• Up to 5 runs in 30 minutes
• Roughly 1–2 trait rerolls every 30 minutes on average

You’ll also get 2–4 rerolls from the daily challenge, so don’t forget to log in and claim them.

3. Weekly Missions (Steady & Reliable Source)

Don’t sleep on your weekly missions. By completing all of them, you’ll get 15 trait rerolls per week. It’s not a fast method, but it’s consistent and adds up over time.

4. Trials: Get Tokens and Trade for Trait Rerolls

Once you’re strong enough, Trials are a top-tier farming method. Trial stages reward you with tokens, which can be exchanged at the trial shop for:

• Trait Rerolls (up to 50 available)
• Gems
• Special units (like Esdeath)

These stages are challenging, so it’s best to prepare a solid team before diving in. But once you can farm them consistently, this becomes a powerful long-term method.

5. Arena Mode: Another Source of 50 Rerolls

By grinding Arena and collecting Arena Tokens, you can access the Arena Shop and buy another set of 50 trait rerolls. This shop is separate from the Trial one, giving you even more reroll potential if you’re willing to put in the effort.

6. Infinite Mode (Loot Bags/Void Bags – RNG Based)

Some players report that Void Bags or Loot Bags from Infinite Mode might drop trait rerolls. However, this method is not reliable—many users have opened dozens without receiving a single reroll. Still, it’s something to try if you’re already farming Infinite for other rewards.

7. Roll Drops – Possible but Inconsistent

There’s also a low 11% chance to get trait rerolls from Roll Drops, but many players feel this rate is misleading. You might just end up with gold or capsules. While not reliable, it’s worth keeping in mind as a bonus.

8. Codes: Always Redeem New Ones

Occasionally, the developers drop codes that reward players with rerolls. Make sure to follow official channels or check regularly for new codes to maximize your reroll stash.

9. Weekly Login Bonuses & Events

Although not always active, future events or login milestones may include rerolls. Keep an eye on the update logs and seasonal events—they sometimes introduce limited-time ways to grab rerolls without grinding.

Right now, ASTD X isn’t the most generous when it comes to farming trait rerolls, especially for free-to-play users. Macroing story mode for XP and doing Expert Challenges are your best daily strategies, while Trials and Arena farming offer long-term value.

Hopefully, the devs add more ways to farm rerolls in the future, especially for newer players who don’t have meta units yet. If you’re struggling, focus on your level rewards, knock out weekly missions, and don’t miss out on Trials and Arena once you’re strong enough. Let’s hope future updates make progression a little less punishing. Until then, keep farming smart—and good luck rerolling that perfect trait.