I'll go over them in three sections: cosmetic updates that don't affect gameplay, templating changes that update how we word certain cards, and a rules change of some import
Borrelguard Dragon Borrelguard Dragon isnt just a 3000 attack beat-stick
That interaction alone earned her restriction in Vintage and eternal hatred everywhere else
Youll actually want a mix of cards that allow you to sacrifice, cards that want to be sacrificed, and sacrifice payoffs
This can save a lot of mana, even though you can only activate this ability as a sorcery
Skilled, experienced deck-builders have some developed statistical intuition and, of course, do not need to calculate such statistics all the time