Why have most yugioh cards mainly from firts ones have been banned?

I made new friends and they still play it. It has been 4 years seens i played it so i decided to get my old cards and battle. Then they were looking through my cards and said moster reborn was banned and so was witch of the black forest.

Why have most yugioh cards mainly from firts ones have been banned?
some cards were banned or limited because they were way overused or just too powerful. monster reborn will let you summon a monster from your graveyard or even a monster from your opponent's graveyard and there's no cost to that too. witch of the black forest lets you search out many monster with high atk and low def (summoned skull. 2500 atk, 1200 def, 6 stars). so pulling out a tough monster is easier with the witch. other cards like rageki, dark hole, and harpie's feather duster are banned also because their effects are very powerful and have no cost to them. the ban list also makes the game more challenging and not ensure a whole lot of short and easy wins in a duel
Reply:Certain cards were banned because they were overused and too powerful. Witch let you find a monster with low defense (Jinzo, etc) Cards like Monster Reborn, Raigeki, Dark Hole, Harpie's Feather Duster, etc have no cost and amazing effects.