I have found some things that are similiar in Yu-Gi-Oh and Magic and other dueling card games and came up with the Five Laws of Dueling.

1. When a card goes against the rules, the card wins. (The Golden Rule of Magic)

2. The cards speak for themselves. (Every dueling game)

3. Every action must be known or it is invalid and the card is dealt with immediately. (Tournament Rule)

4. When several actions take place by both players, they must resolve in reverse order (Stacks and Chains)

5. Priority starts with the player in turn and must change whenever necessary (Yu-Gi-Oh ZEXAL and Magic: The Gathering)

What do you think of them?

Idk about the other dueling games but it sounds accurate

There are other children's card games?! O.o

I only seen Vanguard but it's basically the same as Dungeon Dice Monsters XD

theres pokemon but magic is not rly a children's card game

Magic is a lot harder to pick up that yugioh or pokemon in the understanding of the game and rules. I played MTG before i played a lot of yugioh. The rules in the OP are real stuff but i do not quite know if they would be the top 5 rules. One or two of the rules in OP would be in the top 5 set though for sure.

^ its the simplicity of the rules that makes it more popular then MTG, and probably why duel masters blew so hard (a children's card game using MTG rules would make any 10 year old cry)

generally those are the rules of the game, but sometimes, some rules make absolutely no sense, example, inzektor hopper ruling