Mastering the Relic Buster class in Granblue Fantasy changes how you approach everything from basic farming to high-end event token grinding. If you've been relying on default setups, you're missing out on the explosive burst potential that makes this EXII class a permanent fixture in modern grid rotations.
The primary hurdle isn't unlocking the class—it's understanding how to allocate your Extended Mastery Points (EMP) and manage Machine Cells to maximize your damage efficiency. Without a proper build, your skills drain resources too quickly, leaving your team vulnerable during critical turn phases. This guide breaks down exact stat priorities, optimal skill pairings, and rotation strategies to get the absolute most out of your Granblue Fantasy runs.
Understanding Relic Buster Mechanics
Relic Buster centers around the Machine Cell resource mechanic. You start battle with a maximum pool of cells that power your core utilities, including Limit Burst and Militis Guard. Every normal attack or skill activation consumes these cells unless managed properly through support skills or class passives.
The class shines brightest in short burst setups, particularly during Unite and Fight (Guild War) events where one-turn kills (OTK) dictate efficiency. However, it also performs exceptionally well in Full Auto environments when configured with defensive sustain. Balancing offense and defense relies entirely on how you spend your EMP and choose your sub-skills.
Optimal EMP Priority for Main Character
Extended Mastery Point distribution determines whether your Main Character hits damage caps or falls flat during critical turns. Here is how you should prioritize your EMP spending:
- Critical Hit Training: Max this out immediately. Consistent critical hits are non-negotiable for modern grids.
- Elemental Attack Boost: Aligns directly with your weapon element, multiplying your overall damage output cleanly.
- Double Attack and Triple Attack Stability: Raising multi-attack rates ensures smoother charge bar generation across short and long fights.
- HP and Defense Bonuses: Invest secondary points here only after securing your offensive stats, ensuring you survive retaliatory boss triggers in harder content.
Avoid sinking early points into niche modifiers like Hostility or debuff success rates unless your specific grid or boss strategy explicitly demands it.
Essential Skill Loadouts and Rotations
Your skill choice dictates your role in battle. For standard burst farming, the setup looks very consistent:
- Limit Burst: Essential for converting your initial Machine Cells into a massive 30% charge bar boost for the entire party, enabling instant charge attacks.
- Assault Time or Dispel-heavy utilities: Depending on the raid requirements, slot secondary skills that cover missing debuffs or provide self-sufficiency.
- Engage Augments: Grants valuable self-buffs like Strength and local healing, keeping your character healthy during mid-length battles.
When executing a burst turn, activate your buffs in a sequence that prevents your Machine Cells from depleting before your heaviest hitters trigger their animations. Proper timing prevents awkward damage drops midway through a multi-turn assault.
Common Mistakes to Avoid
Many players fall into traps that tank their damage efficiency. Watch out for these frequent errors:
- Wasting Machine Cells on redundant skills: Don't fire off abilities that consume cells when your team isn't ready to push damage thresholds.
- Neglecting weapon specialty synergy: Relic Buster favors Sabre and Gun weapon specialties. Running off-type mainhands severely cuts your overall stats and bonus modifiers.
- Ignoring charge bar lockouts: Be mindful of boss debuffs that lower charge bar gain, as they break the math behind Limit Burst setups.
Frequently Asked Questions
How do I unlock the Relic Buster class?
You can unlock Relic Buster by trading specific materials gathered from standard co-op and event nodes, provided you have met the basic prerequisite chapters in the main story.
Is Relic Buster good for Full Auto battles?
Yes. With proper defensive sub-skills and sustain EMP nodes, the class utilizes its shield mechanics to stay healthy across longer automated raid runs.
Should I prioritize ATK or Critical Hit EMP first?
Always prioritize Critical Hit nodes first. Multipliers from critical hits scale much better with optimized grid setups than flat attack increases.
What mainhand weapon should I use?
A high-attack Sabre or Gun matching your grid's primary element is mandatory to leverage class-specific weapon awakening bonuses.
