Seven Knights Re:BIRTH: How to Farm Rubies by Leveling Fodder

In Seven Knights Re:BIRTH, you farm Rubies by clearing repeatable adventure stages with one or two powerful area-of-effect (AoE) carries while leveling three to four low-rarity fodder heroes to level 30. Reaching level 30 triggers achievement milestones that award Rubies, even when leveling duplicate common units.

To run this loop, assemble your team, configure automated runs, and collect the achievement payouts.

Setting Up Your Farming Team

Your team needs to eliminate all enemy waves before monsters can attack. Preventing enemy actions protects your low-level fodder from dying and keeps clear times as short as possible.

Place your primary carry in the backline of an offensive formation (such as 1-Back / 4-Front) to maximize their damage multipliers, leaving the frontline slots for fodder units.

Setup Type	Fodder Capacity	Team Roles	Requirements and Trade-offs
Solo Carry	4 Fodder Units	1 Backline AoE Carry	Requires high speed, critical strike, and offensive stats to wipe every wave in one shot without assistance. Maximizes Ruby yield per run.
Dual Carry	3 Fodder Units	1 Primary AoE Carry, 1 Secondary AoE Carry	Secondary carry takes over skill casts across multi-wave battles if your main carry lacks back-to-back wipe potential. Lowers fodder capacity by one slot, but eliminates run failures.

If a single carry leaves enemies standing or allows them to attack, switch to a dual-carry setup. Fast, consistent clears yield more Rubies per hour than slower four-fodder runs that risk party wipes.

How to Run the Fodder Farming Loop

Follow this sequence to maintain continuous clears and steady currency gains:

Stock Initial Fodder: Fill your inventory with 1-star and 2-star heroes gathered from adventure stage drops, quest rewards, or low-tier summon tickets.
Select an Adventure Stage: Choose a stage where your carry consistently moves first and eliminates each wave in a single strike. Prioritize nodes that provide hero drops or evolution materials alongside experience.
Configure Auto-Swap and Auto-Repeat: Enable the built-in system setting to automatically swap out heroes that reach level 30 for unleveled bench units.
Expand Storage: Use an initial allocation of Rubies to expand hero inventory space so unattended repeat runs do not stop prematurely due to a full roster.
Claim Milestone Rubies: Open the achievement log after finishing your repeat runs to collect your earned Rubies in bulk.

Managing Keys and Maximizing Profit

The sustainability of the loop depends on your key economy. Spending Rubies to buy key refills requires your stage runs to return a net surplus of currency over the purchase price.

Target Hot Time Events: Farm heavily during server Hot Time windows. Boosted experience rates and drop chances reduce the number of stage clears required to hit level 30, significantly increasing net Ruby profits per key spent.
Avoid Speed Bottlenecks: Do not move to higher-difficulty stages if tanky enemies or high enemy speed stats prevent your carry from one-shotting the wave. Losing fodder to enemy attacks cuts experience distribution and wastes keys.
Balance Account Goals: Keys spent on fodder grinding cannot be spent on evolution dungeons or high-tier equipment raids. Treat the Ruby farming loop as an active tool to fund mastery upgrades or prepare summons for upcoming banners, alternating with gear progression when your roster needs direct stat upgrades.