Although there is plenty of Fiend-type monsters, they do not receive enough support cards to be made into a decent and versatile deck in the current card pool.
You will automatically be able to get your hands on a copy of Dark Necrofear. It is a very strong card with a strong ability that can change the flow of a game. The only drawback is that it should be used in a fiend deck to special summon it as early as possible.
Tether of Defeat
This is a very good skill due to the fact that you can choose whether you want to mill you or your opponent's deck. This skill is versatile as it can be used to mill your opponents deck to win or send cards into your graveyard for specific reasons, e.g. - Dark Necrofear, Shadow Ghoul, Desert Twister.
Note: More skills are expected! Report Skill name and details by submitting comments or screenshot at the bottom of the page.
Compensation Can be used each time your Life Points decreases by 1000. Send the card on the top of your Deck to the Graveyard, and recover 300 LP.
Draw Sense: DARK Can be used each time your Life Points decrase by 1500. In the Draw Phase, instead of doing a normal draw, draw a random DARK-Attribute monster.
Tether of Defeat Can be used when one of the opponent's monster is destroyed in battle. The Top card from either your or the opponents deck is sent to the graveyard.
Destiny Board Can be used if "Dark Necrofear" is in your Graveyard, and your LP are at 2000 or below. At the end of your 5th turn after activating this skill, you win the Duel. This skill is negated if "Dark Necrofear" leaves your Graveyard. This skill can only be used once per Duel.
Fiend Farewell Can be used when one of your monsters is destroyed by battle. 1 random Fiend-Type monster from your Deck is sent to the graveyard.
Yami Bakura has 2 separate events. The first is the unlock event, where he appears in the gate as well as the duel world. The other event is duel world appearance only, where he had slightly different rewards than the first event. It is unclear whether he will have all cards as rewards for his next appearance or not.
Yami Bakura's starter deck
Description in the game
When Yugi's classmate Bakura was possessed by the evil spirit inside the Millennium Ring, he transformed into Yami Bakura. He is merciless and will stop at nothing to achieve his goal. Yami Bakura's Occult Deck focuses on Fiend and Zombie-type cards.
So I just got Fiend Farewell and Destiny Board back-to-back against Yami Yugi lvl 30 and Rex lvl 40 and I started leveling up Bakura last week. And yet that damn Last Gamble after months of farming is nowhere in sight.
Sadly I didn't have had installed the game when the Bakura event was around. I want to unlock his character so badly or at least to duel with him. I hope there is a stage or another event to offer me a chance to encounter him.
Don't worry, events always come back, you will have the chance to unlock him in the future! For now, try to unlock Marik and, at the end and middle of this month the Paradox Borthers and the new mysterious Legendary duelist!