### Attack:

**Aurora Beam** - 10% chance to lower attack by 1 stage.

**Baby-Doll Eyes** - 100% chance to lower attack by 1 stage.

**Charm** - 100% chance to lower attack by 2 stages.

**Feather Dance** - 100% chance to lower attack by 2 stages.

**Growl** - 100% chance to lower attack by 1 stage.

**Intimidate** - 100% chance to lower all opposing Pokemon's attack by 1 stage.

**King's Shield** - When hit by a contact move, lowers the attacker's attack by 2 stages.

**Memento** - Causes user to faint and lowers targets attack and special attack by 2 stages.

**Noble Roar** - 100% chance to lower attack and special attack by 1 stage.

**Parting Shot** - 100% chance to lower attack and special attack by 1 stage.

**Play Nice** - 100% chance to lower attack and special attack by 1 stage.

**Power Split** - Averages the attack and special attack stats between target and user.

**Rototiller** - Raises attack and special attack of all grass types by 1 stage.

**Secret Power** - 30% chance to lower attack by 1 stage when used in water.

**Swagger** - 100% chance to raise attack by 2 stages and confuse.

**Tickle** - 100% chance to lower attack and defense by 1 stage.

**Venom Drench** - Lowers a poisoned target's attack, special attack and speed by 1 stage.

### Defense:

**Crunch** - 20% chance to lower defense by 1 stage. *(Special Defense in Generations II and III)*

**Crush Claw** - 50% chance to lower defense by 1 stage.

**Flower Shield** - Raises defense of all grass types by 1 stage.

**Guard Split** - Averages the defense and special defense stats between target and user.

**Iron Tail** - 30% chance to lower defense by 1 stage.

**Leer** - 100% chance to lower defense by 1 stage.

**Rock Smash** - 50% chance to lower defense by 1 stage.

**Screech** - 100% chance to lower defense by 2 stages.

**Tail Whip** - 100% chance to lower defense by 1 stage.

**Tickle** - 100% chance to lower attack and defense by 1 stage.

### Special Attack:

**Captivate** - Lowers special attack by 2 stages if the user is the same gender as the target.

**Confide** - 100% chance to lower special attack by 1 stage.

**Eerie Impulse** - 100% chance to lower special attack by 2 stages.

**Flatter** - 100% chance to raise special attack by 1 stage and confuse.

**Memento** - Causes user to faint and lowers targets attack and special attack by 2 stages.

**Mist Ball** - 50% chance to lower special attack by 1 stage.

**Moonblast** - 30% chance to lower special attack by 1 stage.

**Mystical Fire** - 100% chance to lower special attack by 1 stage.

**Noble Roar** - 100% chance to lower attack and special attack by 1 stage.

**Parting Shot** - 100% chance to lower attack and special attack by 1 stage.

**Play Nice** - 100% chance to lower attack and special attack by 1 stage.

**Power Split** - Averages the attack and special attack stats between target and user.

**Rototiller** - Raises attack and special attack of all grass types by 1 stage.

**Secret Power** - 30% chance to lower special attack by 1 stage when used in Misty Terrain.

**Snarl** - 100% chance to lower special attack by 1 stage.

**Venom Drench** - Lowers a poisoned target's attack, special attack and speed by 1 stage.

### Special Defense:

**Acid** - 10% chance to lower special defense by 1 stage.

**Acid Spray** - 100% chance to lower special defense by 2 stages.

**Bug Buzz** - 10% chance to lower special defense by 1 stage.

**Earth Power** - 10% chance to lower special defense by 1 stage.

**Energy Ball** - 10% chance to lower special defense by 1 stage.

**Fake Tears** - 100% chance to lower special defense by 2 stages.

**Flash Cannon** - 10% chance to lower special defense by 1 stage.

**Focus Blast** - 10% chance to lower special defense by 1 stage.

**Guard Split** - Averages the defense and special defense stats between target and user.

**Luster Purge** - 50% chance to lower special defense by 1 stage.

**Metal Sound** - 100% chance to lower special defense by 2 stages.

**Psychic** - 10% chance to lower special defense by 1 stage.

**Seed Flare** - 40% chance to lower special defense by 2 stages.

**Shadow Ball** - 20% chance to lower special defense by 1 stage.

### Speed

**Bubble** - 10% chance to lower speed by 1 stage.

**Bubble Beam** - 10% chance to lower speed by 1 stage.

**Bulldoze** - 100% chance to lower speed by 1 stage.

**Constrict** - 10% chance to lower speed by 1 stage.

**Cotton Spore** - 100% chance to lower speed by 2 stages.

**Glaciate** - 100% chance to lower speed by 1 stage.

**Gooey** - Lowers speed 1 stage upon contact with Pokemon that have this ability.

**Icy Wind** - 100% chance to lower speed by 1 stage.

**Low Sweep** - 100% chance to lower speed by 1 stage.

**Mud Shot** - 100% chance to lower speed by 1 stage.

**Rock Tomb** - 100% chance to lower speed by 1 stage.

**Scary Face** - 100% chance to lower speed by 2 stages.

**Secret Power** - 30% chance to lower speed by 1 stage when used in 'murky water & puddles'

**Sticky Web** - Lowers speed by 1 stage upon switching in.

**String Shot** - 100% chance to lower speed by 2 stages.

**Venom Drench** - Lowers a poisoned target's attack, special attack and speed by 1 stage.

### Evasion & Accuracy

**Defog** - 100% chance to lower evasion by 1 stage.

**Flash** - 100% chance to lower accuracy by 1 stage.

**Gravity** - Lowers evasion of all Pokemon by 2 stages while in effect.

**Kinesis** - 100% chance to lower accuracy by 1 stage.

**Mirror Shot** - 30% chance to lower accuracy by 1 stage.

**Mud Bomb** - 30% chance to lower accuracy by 1 stage.

**Mud-Slap** - 100% chance to lower accuracy by 1 stage.

**Muddy Water** - 30% chance to lower accuracy by 1 stage.

**Night Daze** - 40% chance to lower accuracy by 1 stage.

**Octazooka** - 50% chance to lower accuracy by 1 stage.

**Sand Attack** - 100% chance to lower accuracy by 1 stage.

**Secret Power** - 30% chance to lower accuracy by 1 stage when used in sand and badlands.

**Sweet Scent** - 100% chance to lower evasion by 2 stages.

**Smokescreen** - 100% chance to lower accuracy by 1 stage.

### Odd Cases

**Contrary** - Reverses stat changes. For example, Flatter lowers Special Attack by 1 stage, instead of raising it.

**Trick/Switcheroo + Stat-Changing Item** - You can use Trick or Switcheroo to switch a stat-changing item to your target. For example, you can switch an Eviolite to a non-fully evolved Pokemon and raise its Defense and Special Defense.

**Source**