# Summary • Each fight requires a FORGE burn that increases with the difficulty of the bosses.\ • May start a new mine run for free 23 hours after your last mine run began.\ • There are 4 difficulty levels, Bronze/Silver/Gold/Diamond.\ • Each mine run will have 12 mini bosses that get stronger the deeper you go.\ • Each mini boss you defeat will reward you with 1 Rez credit and 1 Reroll credit that will expire when the current mine run is reset.\ • May use 1 Rez credit to resurrect a random dead monster, may use 2 Rez credits to resurrect a specific monster.\ • May use 1 Reroll credit to reroll abilities on current boss.\ • You must bring 3 heroes into the mine to lead your monsters.\ • Each hero may battle a maximum of 8 times before they become exhausted (can't fight anymore until next mine run).\ • Select up to 30 Splinterlands monsters you own/rent/borrow to be eligible until next reset.\ • Summoners are ineligible for this play mode.\ • You may only select neutral monsters or monsters of any active Force Runes (across all heroes).\ • When a monster is damaged in a fight, they will remain damage in this play mode until next reset.\ • When a monster is killed in a fight, they will be unavailable to be used until next reset.\ • Must send at least 1 monster each fight.\ • Base maximum of 5 monsters & 30 mana may be used per fight, these can be boosted with hero abilities.\ • Monster level limits and hero stat limits per difficulty tier are same as boss battles.\ • Rewards are Electrum, XP, Evolution Essence, and Relic Fragments. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://splinterforge.gitbook.io/electrum-mine-survival-mode/summary.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.