Majora's Mask (GC port from the pre-Wind Waker promo disc, $30 on Gamestop vs $150 on Amazon, go figure), and joined the MTG Arena beta last week, which is fantastic, highly recommend.
Trying to properly buff everyone is like herding cats. I don' have time to chase your ass across the battlefield, you need buffs come get them. I'm not your mag, you aren't feeding me a thousand difluids.
Also, playing as a pure support FO is boring as hell, for every buff/debug tech there are 3...
If you can't be a successful HU/RA without a perfect support FO being your personal bitch, then you're probably a trash HU/RA. If it's too problematic, don't play with a FO. They probably aren't complaining that you aren't doing a good enough job tanking, if you were they wouldn't need to Jell...
multiplayer mode here has a fixed difficulty/buff level for enemies. In GC offline, there was a buff multiplier based on the number of people playing. If you try single mode, it will feel much easier in comparison.