Rebirth

Rebirth is a system in Battle Arena which allows one to drop from max rank to a very low rank in exchange for unique rewards which greatly increase one's end-game power.
A Rebirth begins when a rank 500 fighter crafts a Rebirth Potion, drinks it, and confirms the Rebirth by clicking the green button which appears after drinking the potion. At the start of every Rebirth, the ranks of the fighter and Robacon are set to 50, base stats are reset to their soft caps, and the fighter gains 2,040 Battle Points. 
During a Rebirth, Pixelated Mystery Boxes do not grant any Arena EXP, and stat boost rewards from these boxes fail to apply to the fighter. A:TG EXP gained from Battle Arena is increased during a Rebirth based on the fighter's current rank:
* Rank 40-99: +25%
* Rank 100-199: +20%
* Rank 200-299: +15%
* Rank 300-399: +10%
* Rank 400-499: +5%
Similarly to pre-Rebirth Battle Arena, one Battle Point is awarded each time the fighter ranks up. The Rebirth ends and temporary Rebirth effects are removed once the fighter reaches rank 500 again.
Rebirths, in addition to granting large amounts of Battle Points, give unique rewards based on how many Rebirths have been done:
* First 10 Rebirths: +10% Arena EXP Gain per Rebirth
* First 100 Rebirths: +1% to Base Stat Maximums per Rebirth
* 50 Rebirths: Reincarnation Set can now be crafted in Item Crafting.
== Potion of Regrets ==
If a player starts a Rebirth and realizes they were not prepared, they can craft a Potion of Regrets which, when imbibed, gives 10,000,000,000 Arena XP to themselves and to Robacon. When used at Rank 50, it raises you to Rank 464.
The Potion of Regrets can be used once per real life month (it resets at midnight on the first of every month). It's generally recommended to Rebirth and use a Potion of Regrets to gain one "free" Rebirth per month.