Commanders quarters. Started as an interesting budget build magic the gathering commander deck channel and in less than a year went from that to click bait, 7 videos a day between 10-15 minutes about spoiled cards from whatever the new set coming out is. It absolutely flooded my feed and was completely worthless.
There was also some drama about the lead guys opinions about other IPs getting cards (the walking dead being the first) and how it was the end times for that particular flavor of inked up cardboard.