Idle Heroes Lethia Event: When to Spend or Skip Heroic Summons

Most players should skip spending Heroic Summon scrolls during the Mid-Autumn Festival debut of the Shadow hero Lethia in Idle Heroes. Unless your account holds enough scrolls to hit high-tier milestone rewards without depleting the reserves needed for late-year holiday events, you should rely entirely on free event currency and hoard your summon stash.

The Milestone Investment Structure

The primary risk during Lethia's release week is committing a partial summon stash without reaching the milestone tiers that offer premium account upgrades. Top-tier rewards, including Sublimation chests, Core of Origin shards, and Mysterious Artifact selection chests, are backloaded behind major summon counts.

Spending 300 to 700 scrolls earns minimal auxiliary festival currency and fails to unlock the chests needed for meaningful account progression. This partial investment leaves an account stripped of resources while offering little more than standard fodder and a few base hero copies.

Base Lethia Progression Constraints

Pulling on this banner solely to obtain Lethia copies presents significant limitations:

• No Independent Carry Function: As a base Shadow hero, Lethia does not serve as a standalone carry capable of soloing Aspen Dungeon, Seal Land, or Void Campaign.
• Transcendence Requirement: Fully unlocking her potential requires 5,000,000 Crystals of Transcendence to convert her into Transcendence Lethia.
• Bag Clutter: Without the immediate resources to assemble her Transcendence form, any copies summoned from this banner will sit unused in your bag.

Unless an account is actively ready to promote her into a Transcendence hero, spending scrolls directly for her base copies creates an unnecessary opportunity cost.

Holiday Event Timing and Value

The Mid-Autumn Festival takes place directly before the highest-value event window on the Idle Heroes calendar: Halloween, Black Friday, and Christmas/New Year.

Late-year holiday events consistently offer superior value compared to standard hero release banners:

• Better Currency Conversion: Summons during holiday celebrations typically convert into auxiliary festival currencies at higher rates.
• Lower Reward Thresholds: Major celebrations often offer artifact chests and Sublimation materials at lower scroll thresholds or through flexible event exchange shops.
• Bundled Rewards: Holiday events frequently bundle premium items together, letting you secure both artifact chests and Core of Origin materials within the same summon push.

Spending scrolls on the Lethia banner leaves your account empty right before these high-impact celebrations arrive.

Free Mid-Autumn Event Checklist

Skipping the summon banner does not mean ignoring the Mid-Autumn Festival entirely. You can extract progression value without spending scrolls:

1. Claim the Daily Login: Collect your daily summon scroll, event tokens, and festival drop items from your mail and the event screen every day.
2. Complete Daily Quests: Gather free festival currencies to participate in auxiliary Mid-Autumn mini-games and board mechanics.
3. Review Gem Packages: Check event shops for high-priority items like Stellar Shards, Cores of Origin, or Soul Symbols available for gems rather than scrolls.
4. Pull Free Daily Summons: Use the single free Heroic Summon available every 24 hours to gain passive milestone credit without spending inventory scrolls.

Who Should Spend and Who Should Skip

Use these criteria to determine your action during the Lethia summon week:

• Skip the Event: Accounts in early-to-mid game progression, players building their first or second Transcendence hero, or anyone holding fewer than 2,000 Heroic Summon scrolls should skip spending entirely.
• Consider Spending: Late-game players holding a deep surplus of 3,000 or more scrolls can comfortably commit 1,500 to 2,000 scrolls to hit a guaranteed Sublimation or Core milestone while preserving a safety margin for Christmas.
• Immediate Builders: Players who already possess 5,000,000 Crystals of Transcendence, surplus Stellar Shards, and sufficient Soul Symbols to build Transcendence Lethia right away can justify pulling for her copies.