In order to play any ranked games, your account needs to be at least level 30, which all our accounts are. Furthermore, you need to own at least 20 Champions.
We’ll explain how you can fulfill those requirements below.
Purchase 20 Champions:
13 @ 450 BE = 5850
7 @ 1350 BE = 9450
The total amount of Blue Essences you would need for that = 15,390
Using Champion Shards you will only need 12,312 Blue Essences overall to purchase those 20 Champions. 25 Champion Capsules will be more than enough to purchase 20+ Champions and have a lot of leftover BE for anything you desire.
In other words, using Champion Capsules will let you receive a 20% discount to unlock the required 20 Champions.
450 Blue Essence Champions:
Amumu, Annie, Ashe, Garen, Kayle, Yi, Nunu, Poppy, Ryze, Sivir, Soraka, Warwick, Singed.
1380 Blue Essence Champions:
Alistar, Cho’Gath, Mundo, Eve, Fiddlesticks, Janna, Jax, Malphite, Morgana, Nasus, Sion, Taric, Teemo, Tristana, Tryndamere, Twisted Fate, Udyr, Veigar, Xin Zhao and Zilean.