Ally of Justice Catastor
Level 5 DARK/Machine Synchro Monster2200 ATK / 1200 DEF
1 Tuner + 1+ non-Tuner monsters
At the start of the Damage Step, if this card battles a face-up non-DARK monster: Destroy that monster.
Altergeist Dragvirion
Level 6 DARK/Spellcaster Synchro Monster2200 ATK / 1200 DEF
1 Tuner + 1+ non-Tuner monsters
When an opponent's Special Summoned monster declares an attack: You can return 1 "Altergeist" monster you control to the hand; negate that attack. If this card is Tributed and sent to the GY: You can Special Summon this card. You can only use each effect of "Altergeist Dragvirion" once per turn.
Blackwing - Gram the Shining Star
Level 5 DARK/Winged Beast Synchro Monster2200 ATK / 1500 DEF
1 Tuner + 1 or more non-Tuner monsters
Must first be Synchro Summoned. When this card is Synchro Summoned: You can Special Summon 1 Level 4 or lower non-Tuner "Blackwing" monster from your hand, but its effects are negated.
Infernity Doom Archfiend
Level 6 DARK/Fiend Synchro Monster2200 ATK / 1600 DEF
1 Tuner + 1+ non-Tuner monsters
Once per turn: You can target 1 face-up card on the field; negate its effects (until the end of this turn), then if you have no cards in your hand, you can destroy it. While you have no cards in your hand, if this card battles an opponent's monster, any battle damage this card inflicts to your opponent is doubled. A DARK Synchro Monster that was Summoned using this card as material can make up to 2 attacks on monsters during each Battle Phase.
Stygian Sergeants
Level 5 DARK/Fiend Synchro Monster2200 ATK / 1800 DEF
1 Fiend-Type Tuner + 1 or more non-Tuner monsters
When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can have this card gain 800 ATK until the end of the Battle Phase, also this card can make a second attack in a row.
Tempest Magician 
Level 6 DARK/Spellcaster Synchro Monster2200 ATK / 1400 DEF
1 Tuner + 1 or more non-Tuner Spellcaster-Type monsters
When this card is Synchro Summoned, place 1 Spell Counter on it. Once per turn, you can discard any number of cards to place 1 Spell Counter on a monster(s) you control for each card you discarded. You can remove all Spell Counters on the field to inflict 500 damage to your opponent for each removed Spell Counter.