Harden in Pokemon Survivor
Move · last checked 2026-10-14
Harden in Pokemon Survivor is a Normal-type buff move. Deals no damage: builds defense while active. It deals no damage and adds stacks of defense. Buff moves do not evolve. Every Pokemon can learn it.
Harden at a glance
| Type | Normal |
| Kind | Buff |
| Max level | 5 |
| Bonus at level 1 | +7% damage reduction per stack |
| Bonus at max level | +14% damage reduction per stack |
| Cooldown at level 1 | 0.85 s |
| Evolution | None |
| Effects | None |
| Learned by | All 966 Pokemon |
| Starting move for | 0 Pokemon |
| Spanish name | Fortaleza |
What Harden does
Harden is a Normal-type buff move. Deals no damage: builds defense while active.
Normal moves are in every Pokemon's pool, so it can show up in any run. It reaches you as a new-move card when you level up, as long as one of your four move slots is free. No Pokemon begins a run with it, so you only find it on level-up cards. Each level-up draws three cards by weight from up to six new-move candidates, your move upgrades and the stat cards, so even a good move can sit out several level-ups.
Harden stats by level
Harden adds one stack every 0.85 seconds while it is in your active slot, up to 5 stacks at level 1 and 7 at level 5. Each cast refreshes the timer, so the stacks last 7 s at level 1 and 10.5 s at level 5 after the last cast and then drop together.
Full stacks take 4.3 seconds at level 1 and 6 seconds at level 5, and they stay full for as long as the move keeps firing. Each stack adds 13.7% to your damage reduction, so 7 stacks cut ordinary hits by 96%. The reduction from stacks and Armor cards together is capped at 80%, and pure damage ignores it.
| Level | Bonus | Cooldown | Lasts | Max stacks |
|---|---|---|---|---|
| 1 | +7% damage reduction per stack | 0.85 s | 7 s | 5 |
| 2 | +7% damage reduction per stack | 0.85 s | 7 s | 6 |
| 3 | +10% damage reduction per stack | 0.85 s | 7 s | 6 |
| 4 | +10% damage reduction per stack | 0.85 s | 10.5 s | 6 |
| 5 | +14% damage reduction per stack | 0.85 s | 10.5 s | 7 |
Harden level-up changes
Each level-up card for Harden applies the changes below. They stack, so the level 5 row above already includes all of them.
- Level 2: +1 stack
- Level 3: +40% effect per stack
- Level 4: +50% duration
- Level 5: +1 stack, +40% effect per stack
Does Harden evolve?
No. Harden is a buff move, and buff moves never evolve. Every attack move can evolve once it reaches max level and you have taken the card for its condition. The move evolution guide lists them all.
Which Pokemon can use Harden
Every Pokemon can learn Harden, because Normal moves are in all move pools. The real question is whether it is worth one of your four slots. No Pokemon starts with it. The table lists the top-ranked Pokemon overall by Stat Score. The full list is in the Pokedex.
| Pokemon | Types | Tier | Stat Score | Starts with it |
|---|---|---|---|---|
| Slaking | Normal | S | 100.0 | No |
| Eternatus | Poison / Dragon | S | 98.3 | No |
| Mewtwo | Psychic | S | 94.8 | No |
| Regigigas | Normal | S | 91.8 | No |
| Kartana | Grass / Steel | S | 91.1 | No |
| Spectrier | Ghost | S | 90.1 | No |
| Solgaleo | Psychic / Steel | S | 88.1 | No |
| Lunala | Psychic / Ghost | S | 88.1 | No |
How to use Harden
- Buff moves do not need a target: Harden fires on its cooldown wherever you are.
- Other buff moves are Swords Dance, Agility, and Aqua Ring. The moves list compares all 64.
- Buff moves take one of your four slots and deal no damage. The game stops offering buff moves once you carry two, so a third one never crowds out your attacks.
- Only the moves in your active slot fire, so a buff in a slot you are not using adds no stacks. A bond, which a rift win gives you, fuses loose moves into one group that fires together, each with its own cooldown, so a buff can share a slot with an attack.
Harden in Pokemon Survivor FAQ
What does Harden do in Pokemon Survivor?
Deals no damage: builds defense while active. It is a Normal-type buff move with 5 levels. It gives +7% damage reduction per stack at level 1.
How many stacks does Harden give?
5 stacks at level 1 and 7 at level 5, each worth +14% damage reduction per stack at max level. The stacks last 10.5 s after the last cast.
Which Pokemon can learn Harden?
All 966 Pokemon, because it is a Normal move. None of them start with it.
Browse all 64 moves in the Pokemon Survivor moves list, or read the Pokemon Survivor guides.