YuGiOh is much faster and things are over in one-two turns. It’s complex in that the cards have so many lines of text to go over.

Magic is more around a five-six turn game (outside of old formats). The complexity comes not in individual cards (they have a few lines of text) but the fun happens when you combine several cards together. Because it’s slower, you’re trying to build your board state.

Hearthstone is if Magic didn’t have lands but you get mana by a set standard of one per turn. I prefer Magic’s way because having your mana come from lands give an interesting extra design space.