Hey, I’m Zathong and this guide is about The Underground TFT Build Set 8.5. I will help you learn about The Underground’s trait, build comps and items for champions.

Underground TFT Trait
The Underground must sneak through the sewers after each player combat and crack 10 locks to open a vault. When the vault opens, you may choose to take the loot now, or attempt another heist for even better rewards.
- 3- 2 locks per win, 3 per loss.
- 4- 2 locks per win, 4 per loss.
- 5- 3 locks per win, 5 per loss.
- 6- 4 locks per win, 7 per loss.
Champions list: Ezreal, Kayle, Samira, Sona, Vi.
Underground TFT Comps
Position recommended:
Row | ![]() | ![]() | ![]() | ![]() | ![]() |
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Row 4 | x | ||||
Row 3 | |||||
Row 2 | x | ||||
Row 1 | x | x | x | x |
Best combination with Underground: Aegis, Parallel. I will share for you top team comp for Underground tft set 8.5.
5 Underground + 4 Aegis
Team Builder | Core Champion |
---|---|
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Ezreal, Kayle, Samira, Sona, Vi, Leona, Alistar, Ekko | ![]() ![]() Ezreal, Vi |
4 Aegis + 2 Parallel + 4 Underground + 2 Sureshot + 1 Ace
Team Builder | Core Champion |
---|---|
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Ultimate Ezreal, Ekko, Samira, Leona, Urgot, Alistar, Ezreal, Vi | ![]() ![]() Ultimate Ezreal, Ekko |
[Must See: TFT Comps Set 8.5]
Underground TFT Items
Champions | Items 1 | Items 2 | Items 3 |
![]() Ezreal TFT | ![]() Blue Buff | ![]() Giant Slayer | ![]() Jeweled Gauntlet |
![]() Kayle TFT | ![]() Giant Slayer | ![]() Infinity Edge | ![]() Last Whisper |
![]() Samira TFT | ![]() Giant Slayer | ![]() Hextech Gunblade | ![]() Last Whisper |
![]() Sona TFT | ![]() Blue Buff | ![]() Giant Slayer | ![]() Jeweled Gauntlet |
![]() Vi TFT | ![]() Redemption | ![]() Sunfire Cape | ![]() Warmog’s Armor |
[Must See: TFT best items for each champion Set 8.5]
Underground TFT Abilities

Ezreal fires an orb of physical sabotage at his target, 30% Chilling them for 4 seconds. Then he fires another shot, which deals magic damage to the target and nearby enemies. Chill: reduce Attack Speed

Kayle’s next 3 attacks deal 155% of her Attack Damage to her target, and magic damage to enemies within 1 hex of the target.

Samira rapidly firing bullets that deal physical damage for 1.5 seconds. Bullets ricochet to nearby enemies, for 20% less damage.

Sona fires 2 beams that cycle between 3 phases: 1: Deals magic damage to the nearest enemies 2. Heals the lowest health allies 3. Deals magic damage to the nearest enemies and Stuns them Stun: cannot move, attack, or cast Abilities

Vi grants herself a Health shield for 4 seconds and Sunders nearby enemies for 4 seconds. Then she deals dealing physical damage to nearby enemies. Sunder: reduce Armor
Underground TFT Augments
Augment | Tier | Bonus |
---|---|---|
![]() Underground Heart | 2 | Your team counts as having 1 additional Underground. Gain a Vi. |
![]() Underground Crown | 3 | Gain an Underground Emblem, a Hextech Gunblade, and a Sona. |
![]() Underground Soul | 3 | Your team counts as having 1 additional Underground. Gain a Zz’Rot Portal and an Ezreal. |
Rising Spell Force![]() (Ezreal Carry) | hero | Gain an Ezreal. When he casts his Ability, he gains 20% Attack Speed and 20 Ability Power for the rest of combat (this can stack). |
Raider’s Sports![]() (Ezreal Support) | hero | Gain an Ezreal. Combat Start: Your strongest Ezreal grants his nearest ally a temporary Artifact for the rest of combat and gains 1 gold. |
Divine Ascent![]() (Kayle Carry) | hero | Gain a Kayle. She gains bonuses per star level. 1: 50% Attack Speed 2: +3 Attack Range 3: Attacks fire 2 additional bolts dealing 50% damage |
Righteous Range![]() (Kayle Support) | hero | Gain a Kayle. Combat Start: She and her 2 nearest allies gain +2 Attack Range and 25% Attack Speed. |
Style and Flair![]() (Samira Carry) | hero | Gain a Samira. She gains 30% Attack Damage. When she scores a takedown, she restores 30% of her maximum Mana |
Daredevil![]() (Samira Support) | hero | Gain a Samira. For every 10 Tactician Health missing, she grants your team 3.5% Attack Speed. |
Power Grid![]() (Sona Carry) | hero | Gain a Sona. She gains 10 Ability Power and her Ability fires 1 additional beam. |
Undercurrent![]() (Sona Support) | hero | Gain a Sona. Combat Start: Your strongest Sona grants her 3 nearest allies 50 Mana. |
Boxing Lessons![]() (Vi Support) | hero | Gain a Vi. When she takes damage, she gains 3% Attack Damage, 3 Armor, and 3 Magic Resist, stacking up to 25 times. |
Boxing Lessons![]() (Vi Support) | hero | Gain a Vi. When you field her, your team gains 180 bonus Health. |
Underground TFT Rolling Chances
Level | ![]() | ![]() ![]() | ![]() | ![]() |
Level 1 | 100% | 0 | 0 | 0 |
Level 2 | 100% | 0 | 0 | 0 |
Level 3 | 75% | 25% | 0 | 0 |
Level 4 | 55% | 30% | 15% | 0 |
Level 5 | 45% | 33% | 20% | 2% |
Level 6 | 25% | 40% | 30% | 5% |
Level 7 | 19% | 30% | 35% | 15% |
Level 8 | 16% | 20% | 35% | 25% |
Level 9 | 9% | 15% | 30% | 30% |
Level 10 | 5% | 10% | 20% | 40% |
Level 11 | 1% | 2% | 12% | 50% |
[Must See: TFT Rolling Chances Set 8.5]
Underground TFT Guide
Teamfight Tactics is a strategy game where you build a team of champions to battle against other players’ teams. Winning in Teamfight Tactics requires careful planning, strategy, and a bit of luck.

I have 7 tips that will help you play Underground to win in TFT:
Tip 1: Make sure you understand the game mechanics, such as how to buy champions, how to upgrade them, how to position your team, and how to use items.
Tip 2: Building a strong team is key to winning in TFT. Look for synergies between your champions and try to create a balanced team with a mix of tanks, damage, and support champions.
Tip 3: Pay attention to what other players are doing and adjust your strategy accordingly. If you notice that everyone is going for a certain champion, try to pivot and find an alternative strategy.
Tip 4: Try to balance your spending on champions and leveling up while also saving gold for later rounds.
Tip 5: Place your tanks in front to absorb damage, and put your damage champions in the back to maximize their damage output.
Tip 6: Try to combine items to create powerful combinations and equip them to champions that can make the most of them.
Tip 7: Don’t get too attached to a particular strategy or team composition and be willing to switch things up if the situation calls for it.
[Also, See: TFT tier list, TFT items build, TFT champion ]