Spells, Casting & Spell Wheel Guide

Underkeep spells are less about raw damage and more about what you can fit, stack, and exploit. A strong Underkeep spells loadout starts with class and subclass access, then flows through the spell wheel, chill stacks, and damage-type matchups. If you have ever lost a boss fight because your best cast was in the wrong slot or your damage type was resisted, this guide is for you. The advice below focuses on practical preparation: how to choose a specialization, how much wheel space each spell deserves, and how to build combinations that reward decisions instead of button mashing.

How Underkeep Spells Are Unlocked by Class and Subclass

Magic is not a single universal pool. Access and mastery are primarily tied to class and subclass. Martial classes are not locked out forever; the design goal is for each to have at least one magic-focused subclass, giving access to a themed kit without full mastery. Innate magic classes begin as generalists with lesser spells, then choose a specialized form through subclassing. That structure matters because it sets your ceiling before you ever open the spell wheel.

Your first Underkeep spells should be treated as tools for learning that structure, not as permanent commitments. A generalist can cast across several forms, but the power ceiling is lower. A specialist gives up breadth for a much higher ceiling in one form. The choice is not about which path is “better”; it is about whether you want a flexible answer to unknown encounters or a sharper answer to the encounters you plan to farm.

The seven base types are fire, water, earth, and air plus arcane, holy, and dark. All other forms derive from those roots. For PvE, matching the right type against endgame bosses and challenges gives a noticeable benefit. It is not a hard lockout, but preparation is rewarded. In PvP, resistance and bonuses are more general, so a hyper-specific type build is less mandatory. That distinction should shape your Underkeep spells shortlist: build coverage for PvE, and build consistency for PvP.

Spell Wheel Capacity: The Real Loadout Constraint

Underkeep spells are equipped by capacity, not by an intelligence stat. The spell wheel has limited room, and each spell occupies space based on its strength. Level 1 and level 2 spells are the easy-to-fit options; level 3 and level 4 spells take more room and are reserved for the major casting wheel. Arcane Rift, the portal spell, is an extreme example: it consumes half a spell wheel. That design makes balancing direct and forces real choices.

The practical rule is simple: fill the wheel with spells you will actually cast, not spells that look impressive in a menu. Strong Underkeep spells can crowd out answers to armor, status effects, or positioning. A half-wheel spell such as Arcane Rift may be worth it for the utility, but only if the rest of your kit still functions. Gear does not grant castability in this system; it makes equipped spells stronger. That means your wheel is the gate, and gear is the multiplier.

If you are deciding between two spells, ask which one changes a fight you expect to lose. A niche spell that solves one boss is easier to justify than a second damage spell that duplicates your main option. The same logic applies to spell wheel capacity: every slot spent on redundancy is a slot not spent on the answer you need.

Cryomancer Example: Stack Chill, Then Shatter

The cryomancer is the clearest example of how Underkeep spells can work as a combo system rather than isolated damage buttons. Many cryomancer spells apply chilled, a debuff shown with a frosty smoke effect. Chill reduces move speed and attack speed. Perks can reward you heavily for stacking chill on enemies. The payoff spell is Shatter Rhyme: cast it on a chilled target to consume the stacks, deal damage, and reduce armor.

This is why spell order matters. Do not treat Shatter Rhyme as a random nuke; it is a cash-out button. If you cast it before chill is stacked, you lose the armor reduction and the damage payoff. Against a single boss, build stacks first. Against a group, decide whether the slow from chill is more valuable than spending it. The same decision-making pattern applies to other Underkeep spells: ask what the spell consumes, what it enables, and whether the current fight rewards that trade.

The cryomancer also shows why chill-based spell combinations are stronger than a flat damage rotation. You are not just pressing abilities in order; you are deciding when the setup is worth more than the payoff. That mindset carries over to any specialized build.

PvE and PvP Spell Preparation

PvE and PvP ask different questions. Endgame bosses and challenges give a noticeable benefit when you use the correct magic type. That does not mean a specific subclass is required, but it does mean preparation pays. In PvP, magic resistance and bonuses are more general, so you are less likely to need one exact element for every opponent. Build a focused PvE answer and a more flexible PvP answer instead of forcing one loadout into both.

There is a tradeoff between breadth and power. General magic stats give you a lower ceiling; form-specific magic power gives you a much higher ceiling. The stronger and more specific your build becomes, the easier it is for other players to read your playstyle. That is not a reason to avoid specialization, but it is a reason to specialize deliberately. Underkeep spells reward players who know what their build is trying to do.

How to Build a Practical Underkeep Spells Loadout

Start with the fight, not the spell list. Decide whether you need single-target pressure, armor reduction, crowd control, or a utility portal. Then check your wheel budget. A good loadout has one main damage type, one combo enabler, one payoff spell, and enough room for the answer the encounter demands. If a spell does not support that job, cut it.

Before you lock a wheel, run this short checklist:

• Name your main magic type and the one spell that benefits most from it.
• Confirm your setup spell and payoff spell are both equipped.
• Count your high-cost spells before adding convenience picks.
• Keep one slot for the fight’s actual problem, not your favorite extra damage.
• Recheck whether gear is amplifying your plan or covering for a plan you have not committed to.

In a four-adventurer party, spells also need to support team synergies rather than duplicate them. If one character already applies chill, another character may be better served by a different setup. If your gear is built to amplify a specific form, do not split your wheel across three damage types just because they look useful.

A final check: can you explain your loadout in one sentence? For example, “I stack chill, spend it with Shatter Rhyme, and keep one slot for Arcane Rift.” If you cannot, the wheel is probably carrying too many half-finished ideas. Underkeep spells become easier to pilot when every slot has a job, and easier to improve when you know which spell is the engine and which is the payoff.

FAQ

What is the most important rule for Underkeep spells?

Fit the wheel before you chase power. Strong spells take more space, and Arcane Rift takes half a wheel, so a bloated loadout can leave you without an answer. Choose one main type, one combo, and enough utility.

Do I need a magic class to use Underkeep spells?

No. Martial classes are intended to have at least one magic-focused subclass, giving access to a themed kit. Innate magic classes start as generalists and specialize through subclassing.

How does chill work with Shatter Rhyme?

Chill reduces move speed and attack speed. Shatter Rhyme consumes chill stacks on a chilled target to deal damage and reduce armor, so apply chill first and cash out second.

Is specialization bad in PvP?

Not necessarily. PvP resistance is more general than PvE, and form-specific power has a higher ceiling than general stats. The risk is predictability: the more specific your build, the easier it is to read. Keep one flexible answer in the wheel.