Season 2 - Recommended Combat Mastery Skills

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Everfrost Season 2 — Combat Mastery

Mastery Level caps at 30 for everyone. The Combat tree holds 13 skills across 7 tiers — Lv.1, 5, 10, 15, 20, 25 carry two skills each, and Lv.30 carries one.

Tiers unlock on Mastery Level alone ✅ You do not need to invest points in earlier tiers to reach later ones, so every skill in the tree is reachable once you hit Mastery 30. Spend freely.

The only difference between players is the number of skill points: most have about 30, while Mastery Pass and mastery-pack buyers have about 35 at the same Mastery Level 30.

How Skill Points Scale

Every skill scales linearly ✅ Each point adds the same amount as the first one, so:

A skill’s value at max = its Lv.1 value × 5.

A +2% skill goes 2 / 4 / 6 / 8 / 10%. A +30 skill goes 30 / 60 / 90 / 120 / 150.

Two things follow from this, and both matter when you are planning a build:

• Partial investment is proportional. Four points into a 5-level skill gives you exactly four-fifths of it. Nothing is wasted by stopping short.
• There is no bonus for reaching max. The fifth point is worth the same as the first, so a skill you only half-want is worth half-buying, and a weak skill does not become strong by maxing it.

The Combat Tree

Effects below are the value at max level, read live in game ✅

Tier	Skill	Max	Effect at max level
Lv.1	Unit Mobilization ✅	5	On use, instantly receive 150 units of your highest unlocked level (within capacity). Cooldown 24 hrs
Lv.1	Concentrated Power ✅	5	When launching or joining a rally, Self DMG +10%
Lv.5	Drill Setup ✅	5	Military Center capacity +1,000 — raises your unit cap, the total army you can hold
Lv.5	Intense Training (name pending)	5	Unit training speed
Lv.10	Rotland Trek ✅	5	March Speed within Capital range +5%
Lv.10	Rally Defense ✅	5	When initiating a team-up against survivors, your team’s Mortality -5%
Lv.15	Camouflage ✅	2	Headquarters anti-scout mode, 30 minutes. Cooldown 24 hrs
Lv.15	Master of Rule ✅	5	Troop DMG during State Ruler +10%
Lv.20	Victory Chase ✅	5	When attacking a burning headquarters, the target’s Mortality +5%
Lv.20	Berserk ✅	5	Damage under War Frenzy mode +5%
Lv.25	Siege Strike ✅	5	Troop ATK & DEF in Siege Attacks +10%
Lv.25	Offense Line ✅	1	Build 1 extra offensive structure
Lv.30	Single node — confirmation pending	5	Expected to be a rally departure skill (rallies can launch early, weekly limit +1)

Eleven of the thirteen nodes are confirmed from live tooltips. The Lv.5 second slot and the Lv.30 node are still being verified and will be updated here once read in game.

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Two things most build guides get wrong:

Offense Line costs one point, not five. It is the cheapest node in the tree and unlocks an entire extra offensive structure, which carries a season-long Troop ATK bonus in world battles that grows as you upgrade it — and upgrading it feeds more Mastery EXP back to you. One point for that beats the fifth point of any +5% skill.

Rally Defense only triggers when you initiate. The tooltip reads “when initiating a team-up against survivors.” If you only ever join other people’s rallies, this skill does nothing for you — you benefit from your rally leader having it, not from buying it yourself. Concentrated Power is the opposite: its tooltip says “launching or joining,” so it pays out for everyone in the stack.

Recommended Build — 30 Points

Take the core six first. That is 26 points:

1. Offense Line — 1/1 (1 point)
2. Drill Setup — 5/5 — 1,000 more troops you can hold, so your reserves run deeper through a long fight
3. Siege Strike — 5/5 — +10% ATK & DEF against cities, HQs and turrets
4. Berserk — 5/5 — +5% damage whenever War Frenzy is up
5. Victory Chase — 5/5 — +5% enemy mortality on burning HQs
6. Master of Rule — 5/5 — +10% troop damage on State Ruler day

That leaves 4 points for your role:

Your role	Spend the last 4 points on	Why
Rally joiner (most players)	Concentrated Power — 4/5 (+8% Self DMG in rallies)	Works whether you launch or join, so it pays out every single time you are in a rally. The best flex buy for anyone who fights with the alliance.
Rally leader	Rally Defense — 4/5 (-4% team mortality)	You are the one initiating, so the trigger condition is met. Fewer losses across every rally you run, for your whole team.
Solo / field fighter	Rotland Trek — 4/5 (+4% march speed in Capital range)	Only worth it if you are constantly re-marching inside Capital range. It is the weakest node point-for-point.

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Spending one point on Offense Line breaks the tidy “six skills × 5 points” arithmetic, which is why most builds skip it. Trading the fifth point of a +5% skill for an entire extra fortress is not a close call — take the structure.

If your state is not in State Ruler contention, swap Master of Rule out for Concentrated Power at 5/5. Master of Rule is worth +10% on one day and nothing on every other day, so it only earns its five points if that event is actually in your calendar.

35-Point Build

Same core six (26 points), then 9 points across two role skills instead of one:

• Rally joiners: Concentrated Power 5/5 (31) + 4 into Rotland Trek or Unit Mobilization
• Rally leaders: Concentrated Power 5/5 (31) + 4 into Rally Defense
• Solo fighters: Rotland Trek 5/5 (31) + 4 into Concentrated Power

Fill Order

At a full 30 or 35 points the order does not change your final build — everything on the core list gets maxed either way. Order only matters while you are still climbing toward Mastery 30. In that case:

1. Offense Line first. One point, and the structure starts earning ATK and Mastery EXP immediately.
2. Concentrated Power and Drill Setup next. Rally damage pays out at every alliance fight, and capacity gives you somewhere to put the troops you train.
3. Siege Strike, Berserk, Victory Chase as your fight windows approach.
4. Master of Rule last. It is worth +10% on State Ruler day and exactly nothing on every other day, so fill it just before the event rather than early.

When to Use Combat Mastery

• Stay primarily in Support Mastery while you are still building Bio Lab, resistance and seasonal progression. Support compounds across the whole season; Combat only pays during fights.
• Bio Lab 26 is where level 60 Frostbanes open up, and Bio Lab 28 is the cleaner checkpoint before a hard switch to Combat if you want to keep that access afterwards.
• Before that point, it is still reasonable to switch to Combat temporarily for Enemy Buster day, especially since Capital Clash falls on the same day during State Ruler.
• Resets cost a Mastery Reset Pass, so switch for a known event window or an alliance role — not on impulse after losing a fight.

Low Priority

• Unit Mobilization (max 5) — 150 free top-tier units a day, and unlike every percentage buff here, those troops are permanently yours after the season ends. But 150 is noise next to a full march, it is an active you must remember to press daily, and it gives nothing while you are already at your unit cap. Because scaling is linear there is no reason to commit five points: one spare point for 30 a day is the efficient version.
• Intense Training (max 5) — unit training speed. Useful for rebuilding an army between war days, but it is an economy skill competing against combat skills for the same points.
• Camouflage (max 2) — 30 minutes of anti-scout cover on a 24-hour cooldown. Situational misdirection before a big fight, never worth cutting a core skill for.
• Rotland Trek (max 5) — +5% march speed, and only inside Capital range. On a one-minute march that is three seconds. It is a tempo skill, not a strength skill, and belongs in the flex slot at most.

Event Notes

Enemy Buster

Victory Chase carries this event. Once a target’s HQ is burning, every follow-up attack converts more of their wounded troops into real losses.

Capital Clash

Concentrated Power, Siege Strike, Berserk and Master of Rule are the core. As the fight drags on and everyone starts losing troops, the players with deep reserves — and whose rally leads run Rally Defense — stay effective the longest.

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Verified against the live Combat tree. Values marked ✅ were read directly from in-game skill tooltips. The Lv.5 second node and the Lv.30 node are pending confirmation.