Black Legion - A Synchro deck with pendulums

[Zologe]

So, the Black Legion loves tributing.
Black Legion - Ose
Level 4 DARK
Warrior/Pendulum/Effect
Scale 2
Pendulum effect: Once per turn, when a "Black Legion" monster you control is Tributed; add 1 Level 3 Fiend-Type "Black Legion" monster from your deck to your hand.
Monster effect: When this card is Normal Summoned, and you control no cards, you can Tribute this card; add 2 "Black Legion" Pendulum monsters with different names from your deck to your hand, except "Black Legion - Ose". You cannot Special Summon any monsters, except for "Black Legion" monsters for the rest of this turn. You can only activate this effect of "Black Legion - Ose" once per turn.

ATK: 1800
DEF: 1500

Black Legion - Barbas
Level 3 DARK
Fiend/Effect/Tuner
Monster effect: When this card is sent to the graveyard by a card effect: Special Summon it. During your Main Phase 1, you can tribute this card, then target up to 2 set Spell/Trap cards your opponent controls; destroy those targets. You can only activate 1 effect of "Black Legion - Barbas" per turn, and only once that turn.

ATK: 200
DEF: 2000

Black Legion - Eligos
Level 4 DARK
Warrior/Pendulum/Effect
Scale 7
Pendulum effect: Once per turn, when a "Black Legion" monster you control is Tributed; send 1 Level 3 Fiend-Type "Black Legion" monster from your deck to your graveyard.
Monster effect: When this card is Pendulum Summoned, you can target 1 "Black Legion" Tuner monster in your graveyard; Special Summon it. You can only activate this effect of "Black Legion - Eligos" once per turn.

ATK: 1500
DEF: 1000

Black Legion - Sallos
Level 3 DARK
Fiend/Effect/Tuner
Monster effect: When this card is sent to the graveyard by a card effect: Special Summon it. During your Main Phase 1, you can tribute this card, then target up to 2 face-up Spell/Trap cards your opponent controls; destroy those targets. You can only activate 1 effect of "Black Legion - Sallos" per turn, and only once that turn.

ATK: 1200
DEF: 200

Ars Goetia
Normal Spell card
Target 5 "Black Legion" monsters in your Graveyard; shuffle all 5 into the Deck, then draw 2 cards. You can only activate 1 "Ars Goetia" per turn.

Key of Balam
Equip Spell Card
You can target 1 "Black Legion" monster in your graveyard; Special Summon that target, and equip it with this card. It's effects are negated. If this card is sent to the graveyard because the equipped monster was used as a Synchro Material for the Synchro Summon of a "Black Legion" monster, you can add this card back to your hand. You can only activate 1 "Key of Balam" per turn.

Black Legion - King Balam
Level 7 Dark
Fiend/Synchro/Effect
When this card is Synchro Summoned, you can Special Summon 1 "Black Legion" Warrior-type monster from your deck in face-up attack position. Once per turn, during either players turn, you can tribute up to 2 "Black Legion" monsters you control; destroy an equal amount of cards on the field.

ATK: 2600
DEF: 1000