Dota 2 survived the test of time for the most part, but seasonal fluctuation in players occurs all year round.
Every level in an ability makes it more powerful, sometimes increasing its mana cost as well.
Sounds easy but in some cases you know it must be fast.
The goal is to annoy the opponent as much as possible and deny him as much farm as possible.
After a Carry hero manages to buy the necessary artifacts, the midlaner loses some of its position in terms of importance in the fight, but still remains one of the most important players in the team.
In fact, you can buy everything you need before the game starts.