I'm pretty sure that the metro coin percentage is 1/3, and this debate got me banned on Arcane's discord because he thought it was 1/2.

His logic: One of the two coins always spawns good. The chance of the second one spawning good is 1/2. 1 * 1/2 = 1/2

My logic: There are 6 possibilities:

C1 in red C2 in orange C2 in red C1 in orange C1 in red C2 in no key C2 in no key C1 in red C1 in no key C2 in orange C2 in orange C1 in no key

2 of those are good so the chances are 2/6 = 1/3