The creator of the original mod (Disturbed) gave me permission to update his mod, i tried to keep the base formula as much as i could, while also adding small changes, so, about the mod:
This mod gives you all items considered powerful by players in the starting room (Meaning they will also appear once you go to another floor, until cathedral/sheol), grab any items you want, try any combinations you wish, the limit is your imagination! (And your computer, of course)
Last note: please, only use this mod if you have 1001%, or atleast Real Platinum God, dont cheat your way up, if you do, you're removing the fun from the game (Try just using another save)
Here's a link to the original Rebirth version: http://moddingofisaac.com/mod/66/extremely-overpowed-start