This is the first time i try to build a team, fell free to comment, i'll need help and advices how to improve it.
Gliscor (Ground/Flying) Jolly; Leftovers
252HP / 4 Def / 252 Spe
-Earthquake -Toxic
-Roost -Stealth Rock
Tyranitar (Rock/Dark) Careful; Leftovers
252 HP / 120 Def / 136 SpD
-Curse -Payback
-Rest -Sleep Talk
Umbreon (Dark) Careful; Leftovers
252 HP / 192 SpD / 66 Spe
-Mean Look -Yawn
-Baton Pass -Pursuit
Magnezone (Electric/Steel) Modest; Life Orb
84 HP / 4 Atk / 252 SpA / 168 Spe
-Thunderbolt -Flash Cannon
-Explosion -Magnet Rise
Dragonite (Dragon/Flying) Impish; Leftovers
252 HP / 216 Def / 40 Spe
-Dragon Claw -Dragon Dance
-Roost -Heal Bell
Gengar (Ghost/Poison) Timid; Life Orb
4 Def / 252 SpA / 252 Spe
-Shadow Ball -Focus Blast
-Substitute -Pain Split
Gliscor (Ground/Flying) Jolly; Leftovers
252HP / 4 Def / 252 Spe
-Earthquake -Toxic
-Roost -Stealth Rock
Tyranitar (Rock/Dark) Careful; Leftovers
252 HP / 120 Def / 136 SpD
-Curse -Payback
-Rest -Sleep Talk
Umbreon (Dark) Careful; Leftovers
252 HP / 192 SpD / 66 Spe
-Mean Look -Yawn
-Baton Pass -Pursuit
Magnezone (Electric/Steel) Modest; Life Orb
84 HP / 4 Atk / 252 SpA / 168 Spe
-Thunderbolt -Flash Cannon
-Explosion -Magnet Rise
Dragonite (Dragon/Flying) Impish; Leftovers
252 HP / 216 Def / 40 Spe
-Dragon Claw -Dragon Dance
-Roost -Heal Bell
Gengar (Ghost/Poison) Timid; Life Orb
4 Def / 252 SpA / 252 Spe
-Shadow Ball -Focus Blast
-Substitute -Pain Split