In the S8 season, the Underground Thief Group is similar to the bounty hunter in the S6 season. If you lose consecutively, you can get more rewards. However, in the past, to play a bounty hunter, you had to collect at least 5 bounties. Losing three bounties in a row would not bring much profit, and the number of consecutive losses was uncontrollable. In the S8 season, the underground magic thieves can open a treasure once by accumulating nine levels. Three magic thieves will accumulate two levels for each victory and three levels for failure. If there are five magic thieves, three levels will be added for victory and five levels for failure. After level 9, you can choose to take away the rewards, or you can choose to continue doing trouble. The rewards will be better the next time you open it again.
Therefore, when playing the Underground Demon Thief Group, you do not particularly rely on 5 Demon Thieves. 3 Demon Thieves are also fine. After all, if they keep winning, the five magic thieves will not be much faster than the three magic thieves, but if they keep losing, they may not be able to stabilize their health in the later stage. In contrast, if 3 Demon Thieves come early, they can also receive 5-level rewards in the later stage, and they will be more stable.
This is a seven-population lineup, and eight-population can add another strong control Sejuani or Vel'Koz. Vel'Koz is a must-have if you have Jax on your side.
The earlier you gather 3 Demon Thieves in the early stage, the better, because the quality of everyone in the early stage is not high, and the blood deduction will not be much. This is the best time for Demon Thieves to have a losing streak, and they can even lose to 6 people in a row. In this way, you can give priority to getting equipment, first combine Guinsoo's Fury Blade and Drain Sword, and if you have the blood-stealing strengthening runes, combine Titan's Resolute and Quicksilver. With a population of 6, you can collect 3 Demon Thieves + 3 Fighting Mechas. If you have suitable equipment, you can easily lock the blood by brushing Jax.
There are two ways to play with the Underground Thieves and Fighting Mecha Jax. One is to stop at a population of seven and raise Jax to three stars at this population level. Another way to play is to turn to nine-five. On the fifth floor of the Underground Thieves, it is possible to harvest a large amount of gold coins, easily reach the nine-person population, and then replace some powerful five-fee cards.
The recommended equipment for Jax is: Guinsoo Fury Blade, Drain Sword, and Quicksilver. If you don't want to go up to nine people, and directly chase three after seven people, you can replace Ezreal and Sona, and add two fighters, two guards, or two secret guards.
If you plan to switch to 95 in the later stage, when choosing equipment, you must choose a set for five-cost heroes. For example, Nunu is suitable for Archangel Staff, Titan's Resolve, and Hand of Justice; Erbless: Shoji's Spear, Giant Catcher, Morello Codex; Fiddlesticks: Archangel Staff, Ion Spark, Morello Codex.
There are two ways to play Fiddlesticks. One is to put it in the front row and get beaten first to release its skills. This way you don’t need the Archangel Staff. Ion Spark, Tech Gun, and Morello Codex are better. Another way is to put it in the back row, and then play after the teammates are dead. This kind can give you two Archangel Staffs and Ion Sparks, and you can easily take over the whole field in seconds.
If you have the heart of an underground demon thief group, you can consider going up to 5 demon thieves.
This version of Jax is similar to Volibear in S7. With two stars, he has the strength to hit nine people. However, because there are too many control heroes, Quicksilver is a must. Otherwise, if you encounter Vel'Koz, you won't be able to move at all.