This means that you can upvote your favorite ability
[swarm] => 6
[illuminate] => 8
[snowcloak] => 13
[mountaineer] => 16
[swarm] => 6
[illuminate] => 8
[snowcloak] => 13
[mountaineer] => 16
[illuminate] => 9
[mountaineer] => 16
[snowcloak] => 16
[snowcloak] => 19
[mountaineer] => 21