Please rate my first competitive team!

Hello! Thank you for looking! Sorry I can't post sprites of Pokemon because I have a 13 post count rather than 15.

Leavanny
Item: Razor Claw
Ability: Chlorophyll
EVs: Attack 252 Speed 252/ Sp def 4
Nature: Adamant
- Poison Jab
- Sunny Day
- X-Scissor
- Leaf Blade

Shuckle
Item: Chesto berry
Ability: Gluttony
EVs: Defense 255 Hp 255
Nature: Relaxed
- Sunny Day
- Sandstorm
- Rest
- Sandstorm

Seismitoad
Item: Toxic Plate
Ability: Poison touch
EVs: Attack 255 Sp Def 255
Nature: Brave
- Poison Jab
- Drain Punch
- Earthquake
- Supersonic

Crobat
Item: Black sludge
Ability: Inner Focus
EVs: Sp Attack 255 Speed 255
Nature: Quiet
- Confuse Ray
- Toxic
- Mean Look
- Venoshock

Ampharos
Item: Air Balloon
Ability: Static
EVs: Sp Attack 255 Defense 255
Nature: Modest
- Charge
- Thunderbolt
- Charge Beam
- Confuse ray

Espeon
Item: Leftovers
Ability: Synchronize
EVs: Sp Attack 255 Speed 255
Nature: Quiet
- Morning sun
- Toxic
- Grass Knot
- Psycic

As you may see, my team is to cripple my foes with Toxic! Confuse ray is something I planned for Steel Types, but it usually helps my Crobat beat 1 or 2 Pokemon! i know Leavanny has many weaknesses, but it is my first ev trained Pokemon so I refuse to leave it... it is also a strike first and strike hard Pokemon! I gave Ampharos Air Balloon so it's only weakness, Ground type, wouldn't do anything unless attacked beforehand. Please give me anything I can use to help my team... and Please understand it is my first Ev'd team. Thank you! :D