Understanding Blade Classes
The 
Laser Blade has four upgrade tiers: Class 1, Class 2, Class 3, and Class 4. Each tier increases attack damage and some unlock higher attack speeds. Class 3 and Class 4 come with built-in enchantments (Smite V and Smite X respectively).
Upgrading Your Blade
1. Locate the upgrade recipe for the next class tier in the crafting recipes section
2. Gather the required materials for your target class
3. Arrange them on the crafting table according to the recipe pattern
4. Collect your upgraded blade
Choosing Your Target Class
Class 3 offers a significant jump to 4 attack speed and 10 damage with Smite V, making it excellent for fighting undead mobs. Class 4 is the ultimate version with 14 attack damage, 4 attack speed, and both Smite X and Sweeping Edge III—ideal for endgame combat. Plan your upgrades based on the materials you can obtain and your current combat needs.