How about Dota 2? There's nothing you can buy that can affect gameplay. Steam Workshop is used by community artists to submit their cosmetics, which gets voted into the game by the players. Steam Marketplace where players can buy, sell and trade their cosmetics. 25% of all Battle Pass[0] spending goes directly towards the prize pool of the yearly The International[1] esports tournament, with this year's tournament boasting a $34,330,068 USD prize pool, the largest to date[2].
Are you talking about the cosmetic for the Lina second spell ? Doesn't the cursor show the Stun range when you're about to cast it ? (the only broken cosmetic is the one that make Nyx Assassin look like Sand King)