Good training tool – Invoke Trainer - Become the best Invoker in Dota 2 Review

This app is helpful if you find yourself forgetting spells as Invoker mid team fight. It may help to hold your fingers in a similar position to how you actually use your keyboard when you play. When I first used it I just used my thumbs.
Review by Hoey988 on Invoke Trainer - Become the best Invoker in Dota 2.