Want to relive some of the nostalgia and see other examples, read Tobi Henke's wonderful article here: https://www.cardmarket.com/Magic/Insight/Articles/Famous-Rules-and-Card-Changes-in-Magic-History

One of my earliest Magic memories is hearing people discussing the rules change for Indestructible. Completely brand new player, didn't know how priority worked, barely knew "untap, upkeep, draw," but gosh darn it, I knew Indestructible was now a keyword!

Tunnel vision was changed slightly another way. After the Borborygmos vs. Borborygmos Enraged incident in 2017 with pithing needle, communication rule requirements around naming cards was altered slightly, which also changed that card. Not an important change, but an interesting one.

Tunnel Vision: It used to not affect nonbinary players.

Dark Ritual changed twice. Originally, "mana source" wasn't a card type, and Dark Ritual was an interrupt. This meant that you couldn't respond to it with an instant, but you could counter it with an interrupt.

My thought for Boros Charm was similar to what happened with Esper Charm. Somebody said “Esper Charm, targeting myself” meaning they wanted to draw the cards. However, the only mode on Esper Charm that targets is the discard mode. Judge got called, the player had to discard instead of draw. I thought somebody said “Boros Charm, target myself” meaning they wanted to give their creatures indestructible but instead dealt 4 to themselves.

In addition to the stuff with cascade, split cards with isochron scepter could be imprinted using the low mana value side and the copy could be either side.

It's the same change to boros charm, but there was a second relevant thing that change did. When they made indestructible a keyword, it also stopped boros charm's effect from affecting new permanents that entered AFTER the casting of boros charm.

It used to just be a general statement about all your permanents for the turn. But now it applies things to the currently in-play permanents and later played stuff aren't affected. Making the card instantly worse.

i thought the tunnel vision one was going to be a reference to the commander rules changes where you can't fateseal or otherwise tuck someones commander to the bottom of their deck anymore. I remember a lot of people playing tunnel vision with those kinds of effects to mill someone out since you know the deck is singleton

Biggest rule change that messed up my favorite casual deck: The token ownership rule change. Used to run Hunted Horror and Forbidden Orchard, and get rid of the tokens with despotic scepter and tel-jilad stylus. the rest of the deck was 'swap' stuff, like gilded drak, vedalken plotter, etc (and then put 'my' stuff on the bottom). But losing the ability to sink the tokens really hurt.

That was a really cool change with regards to tunnel vision. I was thinking it had something to do with choosing not to find a card or something.

@Cardmarket - Magic: The rules change that should have never happpened, IMO is the type change for Daru Stinger. When the Change to Creature Types was made and a seperation was made between a tribe and a job or career (e.g. human or elf is a tribe and soldier or druid is a career/job) a lot of older cards were changed according to this. The Daru-Creatures from Legion where changed to be humans at that point, which obviously enabled new synergies (e.g. you can play Grim Lavamancer in a Human Tribal deck now). One mechanic, where this was actually kind of interesting was Amplify, because some of the creatures with this ability got a new type, which made Amplify a lot more potent. This meant, that for a realtively short Time you could play Daru Stinger in pauper and reveal Humans to pump it, which was actually kind of cool, IMO, because there are obviously a lot of humans you happen to play accidentily and this card ist actually complete garbage if you can make it like a 3/3 or bigger (compare this to Heavy Ballista, aka a very strong common back in weatherlight). WOTC didn't like that though, because it was obviously designed to only work in a soldier tribal deck and not a human tribal deck, so to my knowledge Daru Stinger is the only creature, that got retro actively changed twice and lost it's primary tribal and only has a career now and thus will probably never show up as a niche Sideboard card in pauper, which it otherwise could have.
Sorry for the long post, here is a potato 🥔

17:30 For this to work with tainted pact, you'd also have to be running all different lands. A normal mana base (depending on format) would have multiple of the same fetches, shocks or basic lands.

Important context for Oracle + Pact is that you have to be playing a singleton deck for it to work.  Otherwise you'll hit two of the same named cards with your Pact and you won't get to the oracle on the bottom.  People also apparently did it with Lutri, because that way you could cast your pack twice, finding your oracle with the first one and exiling the rest of your library with the second.

Back when I was just starting to get into formats beyond standard, I found this deck using breaking/entering and isocron scepter to cast both sides at once. It seemed great, and a perfect example of the intricacies of the rules of magic... and then they changed it before I could scrap enough together to play the deck 😂

With Tunnel Vision, can you name yourself if you have Form of the Approach of the Second Sun ?
Do you reveal yourself or cease to be a card ?

Serum Powder seems like it may have been a better card/hint for #5

Tunnel Vision technically had another change related to Naming Cards: At a certain tournamnet where someone named a card (Borborygmos) which was not the card name they intended when naming (that was Borborygmos Enraged) and everyone knew it was not the card they intended to name but at the time the card you named was the one you meant. After this tournament I believe the rules were changed so that an ample description of the card is all you need when naming a card, which would also affect cards like Tunnel Vision where you no longer have to perfectly name the card you mean.
But I'll take my 6 points and thank you for another great video!

I thought tunnel vision ruling change was the old commander rule where if your commander was put in your deck stays in your deck, so if your opponent put your commander in the bottom of your deck and cast tunnel vision, he mill you out of the game.

My guess for Tunnel Vision was the change to Commander with the 'tuck' rule. You used to be able to Hinder someone's commander, which was just a great play in general, then later in the game hit them with Tunnel Vision and mill them out. I think I stpped seeing this combo played back when the Eldrazi were released, since a lot of mill strats went out the window. While you can still do this by tucking some other card, it's not nearly as effective as being able to deny a commander, then use that later in the game as a wincon against that player (That you know their bottom card).