In my opinion there is no "Best Yu-Gi-Oh! Card Ever!" but there is contenders, in my opinion there is 6.
Black Luster Soldier - Envoy Of the Beginning
- Hands down this card is fantastic. He is fantastic, mainly the reason why he is banned. You can remove from play one monster on the field easily with his first effect. Then put a smack down with his second. When you destroy a monster, he gets to attack again? That is fricken sweet, he can clear the field fast.
Chaos Emperor Dragon - Envoy of the End
- This card has his own OTK Burn. There is not doubt this card is powerful with the proper other cards. This card can instantly burn life points to your opponent. Lets say each player has 5 cards in there hand, and there is 6 cards on the field. 10 x 3000 = 3000 + 3 x 300 = 1800. BAM! Instant damage watch out for this card.
Yata - Garasu - He can make your opponent so he can never draw a card again. This card has been banned since 2004, shows how bad *** this little birdy is.
Solemn Judgment - This card can say "STOP GET YOUR *** OUT OF HERE SON" This card can ruin the best strategies of your opponent and stop basically everything. Many people underestimate this card because of its half of your life points cost but when it is ran in 3's it is Jesus.
Rescue Cat - AWWWW LOOK AT THAT LITTLE KITTY, Wait what why are you sending him to the grave yard. OH MY GOD AHHH NOOOOO. This Kitty can be abused so much. This Kitty has a deck that is on top of the meta right now "Synchro Cat". It can bring out 3 level beasts or lower so fast. You can Synchro summon so much easily. With the new release of X - Saber Aiberllum, he can abused so bad, that you should be calling Animal Control!
Crush Card Virus - This card made my jaw drop when Kaiba used it against Yugi. Having all your monsters 1500 attack or higher destroyed when you draw, in your hand or on the field for 3 turns and can make a boy cry. This card can destroy a lot of your key cards and it can be so annoying. Then you can charge with your monsters. This card can be a lot worse then the Chicken Pox.
Lol I was bored so don't judge me =D, Anyways good luck towards your future duels and deck building.
- Dan T