Each class has 6 Abilities with a cool down and recharge period or limited uses.

Most credit here goes to Isaac Miller, I made some visuals to showcase his writing.
There are 3 basic abilities, 2 higher level abilities that can be used up to 10 times per game, and an Ultimate ability that can be used twice a game with a five minute cool down period between uses. There is a 1.5 minute warm up before first use.