League of Legends Champion Mastery Level Boosting is a safe & cheap service on Boostingvip.com. You can get your appointed Champion Mastery level to 7 within two days. Safety guaranteed during the whole LoL Mastery Boost service for all levels. Free from tedious farming, play with top Mastery LoL Champions.

Requirements for Champion Mastery:
The Specific champion that you want Mastery level boost on
Not In Low Priority Queue

Enough BE 
For level 6 it requires 2450 BE / the specific champion shard
For level 7 it requires 2950 BE / the specific champion shard

Champion Mastery rewards:
Your Desired Mastery Level
A cool emote that you can use in-game

Delivery Time:
Mastery level 1>5: two days
Mastery level 5>7: several hours