MagnaCast - You may have seen this from the M.I.C.O.Y.C homepage. Me and Sam run this channel together. Used to be livestreams, but now we just stick to rambling on about whatever's on our minds. It's a good place to vent.
Main - Not 100% sure what this one is, but Sam just refers to this as his main channel. So I guess this is just the one he uses to comment, like, share, and subscribe to other channels without having tonnes of subscriptions from his past channels. Though there is also content here if you're interested.