The following cards have been announced as well as another couple that I'm not sure are going to be in the same set but still fun cards:
Lord of Red
Lvl 8 Fire Dragon Ritual Monster
2400/2100
You can Ritual Summon this card with "Red-Eyes Transmigration". Once per turn, during either player's turn, when a card or effect is activated, except "Lord of the Red": You can target 1 monster on the field; destroy it. Once per turn, during either player's turn, when a card or effect is activated, except "Lord of the Red": You can target 1 Spell/Trap Card on the field; destroy it.
Red-Eyes Transmigration
Ritual Spell Card
This card is used to Ritual Summon "Lord of the Red". You must also Tribute monsters from your hand or field, and/or banish "Red-Eyes" monsters from your Graveyard other than "Red-Eyes B. Chick", whose total Levels equal 8 or more.
The Fang of Critias
Normal Spell Card
(This card is also always treated as "Legendary Dragon Critias".)
Send, from your hand or your side of the field to the Graveyard, 1 Trap Card listed on a Fusion Monster that can only be Special Summoned with "The Fang of Critias" (if that card is Set, reveal it), then Special Summon that Fusion Monster from your Extra Deck. You can only activate 1 "The Fang of Critias" per turn.
Legendary Knight Critias
Lvl 8 Light Warrior
2800/1800
Cannot be Normal Summoned/Set. Must be Special Summoned with "Legend of Heart", and cannot be Special Summoned by other ways. When this card is Special Summoned: You can target 1 face-up Spell/Trap Card on the field; banish that target. When this card is targeted for an attack: You can target 1 Trap Card in your Graveyard; Set that target. That Set card can be activated this turn.
The Claw of Hermos
Normal Spell Card
(This card is also always treated as "Legendary Dragon Hermos".)
Send, from your hand or your side of the field to the Graveyard, 1 monster with the same Type as 1 Type listed on a Fusion Monster that can only be Special Summoned with "The Claw of Hermos" (if that card is Set, reveal it), then Special Summon that Fusion Monster from your Extra Deck. You can only activate 1 "The Claw of Hermos" per turn.
Legendary Knight Hermos
Lvl 8 Light Warrior
2800/1800
Cannot be Normal Summoned/Set. Must be Special Summoned with "Legend of Heart", and cannot be Special Summoned by other ways. When this card is Special Summoned: You can target 1 face-up Spell/Trap Card on the field; banish that target. Once per turn, when this card is targeted for an attack: You can target 1 Effect Monster in your Graveyard; until your next End Phase, this card's name becomes that monster's, and replace this effect with that monster's original effects.
Timaeus the Knight of Destiny
Lvl 10 Light Warrior Fusion
Atk? Def?
"Legendary Knight Timaeus" + "Legendary Knight Hermos" + "Legendary Knight Critias"
Must be Special Summoned (from your Extra Deck) by sending the above cards you control to the Graveyard, and cannot be Special Summoned by other ways. (You do not use "Polymerization".) This card is unaffected by other card effects. If this card attacks or is attacked, during damage calculation (in either player's turn): You can activate this effect; this card's ATK and DEF each become equal to the ATK of the monster on the field with the highest ATK (your choice, if tied). When this card is destroyed by battle: You can Special Summon 3 "Legendary Knight" monsters from your hand, Deck, and/or Graveyard, ignoring their Summoning conditions.
Mirror Force Dragon
Lvl 8 Light Dragon
2800/1200
Must be Special Summoned by "The Fang of Critias" by sending Mirror Force to the graveyard. When a monster you control is targeted by an opponents card or attack you can activate this effect: Destroy all cards your opponent controls.
Black Metal Dragon
Level 1 Dark Dragon
600/600
1.You can target 1 "Red-Eyes" monster you control and equip this card to that monster from your hand or side of the field. While equipped with this card that monster gains 600 attack.
2. If this card is sent from the field to the graveyard: You can add 1 "Red-Eyes" card from your deck to your hand.
Red-Eyes Flare Metal Dragon
Rank 7 Dark Dragon
2 Level 7 monsters
While this card has xyz materials it can not be destroyed by card effects. While this card has xyz materials inflict 500 damage to your opponent each time he activates a card or effect. Once per turn, during either players turn you can detach one xyz material from this card to target 1 Normal "Red-Eyes" monster in your grave yard and special summon it.
2800/2400