More details on the event.
You have to beat up members of the Rare Hunters (including more generic designed ones, and Arkana) in order to face Yami Marik and gather map fragments.
By accumulating enough Event Points, you can ultimately get Yami Marik as a usable character.
And various jewels and Items are handed out by beating the Rare Hunters.
As to Yami Marik himself, he drops cards such as
- Lava Golem (Ultra Rare)
- Masked Beast Des Gardius (Super Rare)
- Gil Garth (Super Rare)
- Melchid the Four-Faced Beast (Common)
- Grand Tiki Elder (Common)
- Revival Jam (Super Rare)
- Byser Shock (Super Rare)
- Dark Jeroid (Super Rare)
- Jam Defender (Common)
As to Yami Marik the character:
Skills:
Level 4:
LP Boost γ
Increases starting Life Points by 2500, reduce hand by 2 cards.
Level 13:
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.
Level 20:
Right Back at You
Can be used in the Main Phase of your next turn following the turn in which you took battle damage. Select 1 face-up monster on your field. This turn, the selected monster’s ATK increases by half of the battle damage received in the turn you last took battle damage. This skill can only be used once per turn.
Drop Only:
Shadow Game
At the end of their respective turn, each player will lose LP equal to “100” times the number of cards in their own graveyard.
And for his rewards list:
Level 2: 10 Gemes
Level 3: Dark Energy (Card)
Level 4: LP Boost γ (Skill)
Level 5: Deck Slot
Level 6: 15 Gems
Level 7: Viser Des (Card)
Level 8: Deck Slot
Level 9: 25 Gems
Level 10: Relieve Monster (Card)
Level 11: Mask of Weakness (Card)
Level 12: 35 Gems
Level 13: Draw Sense: DARK (Skill)
Level 14: Bowganian (Card)
Level 15: 50 Gems
Level 16: Coffin Seller
Level 17: 60 Gems
Level 18: Mask of Weakness
Level 19: 75 Gems
Level 20: Right Back at You (Skill)
Level 21: Hidden Soldiers (Card)
Level 22: 100 Gemes
Level 23: Drillago
Level 24: 100 Gemes
Level 25: Masked Beast Des Gardius (Card)
Level 26: 150 Gems
Level 27: Deck Slot
Level 28: 200 Gems
Level 29: 250 Gems
Level 30: 300 Gems
Level 31: 100,000 Gold
Level 32: 200 Gems
Level 33: Revival Jam (Card)
Level 34: 250 Gems
Level 35: Legendary Fiend (Card)
Level 36: 1 Ultra Rare Jewel
Level 37: 200 Gems
Level 38: Lord Poison
Level 39: 250 Gems
Level 40: Helpoemer
