The game will be released on December 19 at 9PM UTC, in PVE and PVP modes. A few days later we will give rise to the leagues.
What is the ROI / how much it will take to recover my inversion?
This is a very simple question, it all depends on your strategy. If you trust the token, and don't extract your money ahead of time by paying a penalty, the ROI can be a few days, because the token will go up in price.
Taking out price rise speculations, the roi is planified to be between 12 and 18 days, based on your rarity level and amount of teams.