Season 2 - Recommended Support Mastery Skills

Overall Strategy

Stay primarily in Support Mastery while progressing Bio Lab, resistance, Smart Greenhouses, Frost Cores, and Iceblooms.
A practical breakpoint for permanently leaving Support is around Bio Lab Level 28, when players can continue handling the highest seasonal Leopards/Boomers without relying as heavily on Support resistance bonuses.
Before that point, it is still reasonable to temporarily reset into Combat Mastery on Enemy Buster / Capital Clash day, then return to Support afterward.
Support priorities change after reaching Mastery Level 30, because Mastery EXP skills stop providing meaningful progression value once the level cap is reached.

Recommended Support Skill Priority

Priority	Skill	Recommendation	Why It Matters
★★★★★	Resistance Boost	MAX	One of the most important Support skills while resistance still matters. It helps players reach the resistance needed for higher-level seasonal creatures earlier and is a major reason Support remains valuable before Bio Lab 28.
★★★★★	Frost Core Refinement	MAX	Improves Frost Core income. Frost Cores are a major bottleneck for seasonal progression, so this should be treated as a core economy skill.
★★★★★	Icebloom Production	MAX	Improves Icebloom production and keeps seasonal building progression moving. Frost Cores and Iceblooms should be improved together rather than choosing only one resource path.
★★★★★	Swift Rally	MAX / 5	Strongly recommended for active Yeti farming. Yetis can require longer marches, and faster rally movement / troop return reduces downtime between rallies so formations become available sooner for the next Yeti.
★★★★★ early	Architect’s Insight	MAX before Mastery 30	Excellent while progressing because it accelerates Mastery EXP gained from seasonal building upgrades. Once Mastery Level 30 is reached, these points should be reconsidered because additional Mastery EXP no longer advances the player.
★★★★★ post-cap	Vault Master	5/5 after Mastery 30 when possible	Once Mastery Level 30 is reached, this becomes a very useful alliance-support investment. Maxing the skill allows capped players to drop a stronger vault for alliance members to loot. Detailed vault mechanics are covered separately.
★★★★☆	Injury Relief	High / MAX when points allow	Useful for repeated seasonal PvE by reducing the impact of injuries while farming Boomers, Leopards, Yetis, and other seasonal creatures.
★★★★☆	Eco Recovery	High	Improves seasonal building construction efficiency and becomes increasingly useful as Bio Lab and other seasonal building timers grow longer.
★★★★☆	Build Support	Good investment	Useful for both personal progression and helping alliance members accelerate seasonal construction.
★★★☆☆	Work as One	Situational / good	Improves alliance-help efficiency. Helpful, but generally below the core resistance, economy, Yeti-farming, and post-cap alliance-support skills.
★★☆☆☆	Free Construction	Situational	More useful earlier when seasonal construction timers are shorter. Its relative value drops as upgrade times become much longer.
★★☆☆☆	Shield Bond	Situational	Useful tactical support for protecting an alliance member, but it does not directly accelerate seasonal progression.
Low after cap	Siege Expert	Use mainly before Mastery 30	Helpful while Mastery EXP still matters. Once Mastery Level 30 is reached, the points are usually better moved into skills that still provide progression, farming, or alliance value.

Before Mastery Level 30

While still leveling Mastery, prioritize skills that create a compounding progression advantage:

Architect’s Insight — accelerate Mastery EXP.
Resistance Boost — reach higher seasonal creatures sooner.
Frost Core Refinement — improve Frost Core income.
Icebloom Production — improve Icebloom economy.
Swift Rally — reduce Yeti rally travel and return downtime.

After Reaching Mastery Level 30

Once Mastery Level 30 is reached, re-evaluate any points invested mainly for Mastery EXP generation.

Core Post-Cap Priorities

Resistance Boost
Frost Core Refinement
Icebloom Production
Swift Rally
Vault Master — 5/5 when points allow

Then allocate remaining points based on current progression needs into Injury Relief, Eco Recovery, Build Support, or Work as One.

Why Swift Rally Is Top Priority

Swift Rally should not be viewed as only a convenience skill.

For active Yeti farming, the repeating cycle is:

Join rally → march to Yeti → defeat Yeti → return → join the next rally

Longer-distance Yetis increase the amount of time a formation is unavailable. Faster rally movement and troop return means:

Less downtime between Yeti rallies.
Formations return sooner and are available for the next rally.
Active players can participate in more rallies over the same period.
The benefit compounds across repeated daily Yeti farming.

Because of this, Swift Rally deserves a full ★★★★★ rating for active Season 2 players.

Why Resistance, Frost Cores, and Iceblooms Form the Core

These three skills work together:

Resistance Boost helps unlock stronger seasonal targets earlier.

Frost Core Refinement improves one of the primary seasonal progression resources.

Icebloom Production supports the other side of the seasonal building economy.

A strong Support build should therefore avoid over-investing in one resource while neglecting the others.

Practical Rule

Before Mastery 30: prioritize Mastery growth + resistance + seasonal economy + Swift Rally.

At Mastery 30: remove points from Mastery-EXP-only skills when they no longer provide value.

Post-cap: keep the core economy/resistance skills, keep Swift Rally for Yeti farming, and strongly consider Vault Master 5/5 for alliance support.

Enemy Buster + Capital Clash: temporarily switch to the recommended Combat Mastery build when appropriate.

Working recommendation for Everfrost Season 2. Exact allocations can be refined further based on available skill points and the player’s current Bio Lab / seasonal progression.