Toxic Swamp in Pokemon Survivor
Arena · last checked 2026-10-14
Toxic Swamp in Pokemon Survivor is the Poison-type rift arena. Everyone who is not Poison or Steel-type takes damage from the poison puddles. No weather is forced here. 3 legendaries can open it, which is 1.7% of rifts on a fresh save.
Toxic Swamp at a glance
| Type | Poison |
| Terrain | Puddles of poison |
| Hazard | Poison puddles: damage over time |
| Immune types | Poison and Steel |
| Weather | None |
| Legendaries here | 3 of 87 |
| Chance per rift | 1.7% on a fresh save |
| Time limit | 120 seconds |
What the Toxic Swamp is
A rift is a short fight against a legendary Pokemon. When the game opens one, it picks a legendary and then one of that legendary's types, and the arena of that type is where the fight happens. Toxic Swamp is the arena for Poison. It is a circle about 11 tiles in radius, the fight lasts at most 120 seconds, and the legendary does not suffer the hazards of its own arena.
Puddles of poison. Columns are rare, so there is little to hide behind.
Toxic Swamp terrain: poison puddles
Standing in the poison puddles hurts every 0.5 seconds. Each tick takes the larger of 3 HP and 1.8% of your max HP, and it ignores the short invulnerability that follows a normal hit. Armor and damage reduction still apply. The flat part decides the damage up to about 171 max HP, which covers most Pokemon at the start of a run.
Poison or Steel-type Pokemon ignore it completely. That is 137 Pokemon on the roster, or 14% of it. Everyone else should keep moving, because the poison puddles covers about 31% of the arena.
| Max HP | HP lost per tick | HP lost per second | Seconds from full to empty |
|---|---|---|---|
| 100 | 3 | 6 | 16.7 |
| 150 | 3 | 6 | 25 |
| 200 | 3.5 | 7 | 28.6 |
| 300 | 5.3 | 10.5 | 28.6 |
Weather in the Toxic Swamp
The game does not force any weather in this arena, so no type gets a damage boost and nobody loses HP to the sky. The only multipliers that matter are the type chart and your own cards.
Legendaries that can open the Toxic Swamp
3 legendaries have the Poison type, and all of them shoot from a distance. Their speed runs from 73 to 81. A legendary with two types opens this arena only half the time, and a legendary you have not beaten yet is picked 4 times as often as one you have.
| Legendary | Types | Style | Speed | Opens this arena |
|---|---|---|---|---|
| Eternatus | Poison / Dragon | Shooter | 81 | Half the time |
| Munkidori | Poison / Psychic | Shooter | 75 | Half the time |
| Fezandipiti | Poison / Fairy | Shooter | 73 | Half the time |
How to fight in the Toxic Swamp
- Bring Poison or Steel-type Pokemon if you have them. The best by Stat Score are Eternatus, Kartana, Solgaleo, Dialga, and Excadrill.
- At 6 HP per second for a Pokemon with 150 max HP, the floor can take more life than a mistake against the legendary. Treat the poison puddles as a wall and fight from the clean ground.
- Every legendary here is a shooter. Columns and distance matter more than raw speed.
- Plan for the clock. At minute 10 the legendary has about 8,600 HP, so you need roughly 72 damage per second for 120 seconds. Its contact hit takes 66 HP and its shots 33 HP at that point, before armor and type effects. The rifts guide has the full table.
- Speed: the legendaries here move at 73 to 81, and the median Pokemon moves at 105, faster than all of them.
What you get for winning
A win gives the same prize in every arena: the legendary joins you as a bond, plus a held item, experience, three tickets and a share of coins, and a ten-ticket one time in two. The legendaries guide lists all 87, and beating one counts toward the legendary achievements in the achievements guide.
Toxic Swamp in Pokemon Survivor FAQ
Which legendaries appear in the Toxic Swamp?
3 legendaries: Eternatus, Munkidori, and Fezandipiti. The arena is the one of the legendary's type that the game picks, and a dual-type legendary opens this arena half the time.
How likely is the Toxic Swamp?
On a fresh save, 1.72% of rifts open this arena. The game picks one of the 87 legendaries, then one of its types, and unbeaten legendaries are 4 times as likely to be picked, so the chance moves as you win.
How dangerous is the poison puddles in the Toxic Swamp?
A Pokemon with 150 max HP that is not Poison or Steel-type loses 6 HP per second standing in it. Poison or Steel-type Pokemon take nothing.
Browse all 18 arenas in the Pokemon Survivor arenas list, or read the Pokemon Survivor guides.