Hi I will include Status Moves **and** Attacks that lower stats (I will also include Burn moves and Paralyze moves since they drop the Attack and Speed stat:

**STATUS**

**Baby-Doll Eyes**

Lowers target's Atk by one stage and has +1 priority

**Charm**

Lowers the target's Atk by two stages

**Confide**

Lowers target's Sp. Atk by one stage

**Cotton Spore**

Lowers target's Speed by two stages

**Eerie Impulse**

Lowers the target's Sp. Atk by two stages

**Fake Tears**

Lowers target's Sp. Def by two stages

**Feather Dance**

Lowers the target's attack stat by two stages

**Flash**

Lowers the target's accuracy stat by one stage

**Flatter**

Raises the target's Sp.Atk stat by two stages and confuses it

**Glare**

Paralyzes target (thus quartering Speed stat)

**Growl**

Lowers target's Atk stat by one stage

**Kinesis**

Lowers the target's accuracy by one stage

**King's Shield**

King's Shield protects the user from any moves except status moves for that turn. Additionally, if King's Shield blocks an attack that would make contact with the user, the attacker's Attack stat drops by 2 stages

**Leer**

Lowers target's Def stat by one stage

**Memento**

Memento causes the user to faint and in return lowers the Atk and Sp. Atk stat of the target by two stages each

**Metal Sound**

Lowers target's Sp. Def by two stages

**Noble Roar**

Lowers target's Atk and Sp. Atk stats by one stage each

**Parting Shot**

Lowers the target's Atk and Sp. Atk stats by one stage each, then switches the user out

**Play Nice**

Lowers target's Atk stat by one stage

**Sand Attack**

Lowers the target's accuracy by one stage

**Scary Face**

Lowers the target's Speed stat by two stages

**Screech**

Lower's the target's Def stat by two stages

**Smokescreen**

Lowers accuracy stat of target by one stage

**String Shot**

Lowers target's Speed stat by two stages

**Stun Spore**

Paralyzes target thus quartering Speed stat

**Sweet Scent**

Lowers evasion stat of target by one stage

**Tail Whip**

Lowers target's Def stat by one stage

**Thunder Wave**

Paralyzes target, quartering the Speed stat

**Venom Drench**

Lowers Atk, Sp. Atk and Speed stats of a poisoned Pokemon by one stage each

**Will-O-Wisp**

Burns target, halving Atk stat

**DAMAGING MOVES**

**Blaze Kick**

10% chance to burn target (halving Atk stat)

**Body Slam**

30% chance to paralyze target (quartering Speed stat)

**Bolt Strike**

20% chance to paralyze target (quartering Speed stat)

**Bounce**

30% chance to paralyze target (quartering Speed stat)

**Bulldoze**

100% chance to lower target's Speed stat by one stage

**Constrict**

10% chance to lower target's Speed stat by one stage

**Crunch**

20% chance to lower target's Def stat by one stage

**Crush Claw**

50% chance to lower target's Def by one stage

**Fire Fang**

10% chance to burn target (thus halving attack stat)

**Fire Punch**

10% chance to burn target (thus halving attack stat)

**Iron Tail**

30% chance to lower target's Def stat by one stage

**Low Sweep**

100% chance to lower target's Speed stat by one stage

Nuzzle

100% chance to paralyze target (thus quartering Speed stat)

**Play Rough**

10% chance to lower target's Atk stat by one stage

**Razor Shell**

50% chance to lower target's Def by one stage

**Rock Smash**

50% chance to lower target's Def by one stage

**Rock Tomb**

100% chance to lower target's Speed stat by one stage

**Sacred Fire**

50% chance to burn target (thus halving Atk stat)

**Spark**

30% chance to paralyze target (thus quartering Speed stat)

**Thunder Fang**

10% chance to paralyze target (thus quartering Speed stat)

**Thunder Punch**

10% chance to paralyze target (thus quartering Speed stat)

**Volt Tackle**

10% chance to paralyze target (thus quartering Speed stat)

**Acid Spray**

100% chance to lower target's Sp. Def by two stages

**Blue Flare**

20% to burn target (thus halving Atk stat)

**Bug Buzz**

10% chance to lower target's Sp. Def by one stage

**Discharge**

30% chance to paralyze target (thus quartering Speed stat)

**Dragon Breath**

30% chance to paralyze target (thus quartering Speed stat)

**Earth Power**

10% chance to lower target's Sp. Def stat by one stage

**Electroweb**

100% chance to lower target's speed by one stage

**Energy Ball**

10% chance to lower target's Sp. Def by one stage

**Ember**

10% chance to burn the target (thus halving the Atk stat)

**Fire Blast**

10% chance to burn the target (thus halving the Atk stat)

**Flamethrower**

10% chance to burn the target (thus halving the Atk stat)

**Flash Cannon**

10% chance to lower target's Sp. Def by one stage

**Focus Blast**

10% chance to lower target's Sp. Def by one stage

**Glaciate**

100% chance to lower target's Speed stat by one stage

**Heat Wave**

10% chance to burn the target (thus halving the Atk stat)

**Icy Wind**

100% chance to lower target's Speed stat by one stage

**Lava Plume**

30% chance to burn the target (thus halving the Atk stat)

**Leaf Tornado**

50% chance to lower target's accuracy stat by one stage

**Luster Purge**

50% chance to lower target's Sp. Def stat by one stage

**Mist Ball**

50% chance to lower target's Sp. Atk stat by one stage

**Moonblast**

30% chance to lower target's Sp. Atk stat by one stage

**Mud Bomb**

30% chance to lower target's accuracy stat by one stage

**Mud Shot**

100% chance to lower target's Speed stat by one stage

**Mud Slap**

100% chance to lower target's accuracy by one stage

**Muddy Water**

30% chance to lower target's accuracy stat by one stage

**Mystical Fire**

100% chance to lower target's Sp. Atk stat by one stage

**Psychic**

10% chance to lower target's Sp. Def stat by one stage

**Scald**

30% chance to burn target (thus halving Atk stat)

**Searing Shot**

30% chance to burn target (thus halving Atk stat)

**Shadow Ball**

20% chacne to lower target's Sp. Def by one stage

**Snarl**

100% chance to lower target's Sp. Atk by one stage

**Steam Eruption**

30% chance to burn target (thus halving Atk stat)

**Thunderbolt**

10% chance to paralyze target (thus quartering Speed stat)

**Thunder Shock**

10% chance to paralyze target (thus quartering Speed stat)

**Thunder**

30% chance to paralyze target (thus quartering Speed stat)

**Zap Cannon**

100% chance to paralyze target (thus quartering Speed stat)

HOPE THIS HELPED

Source: Bulbapedia