So, this is my crack at the Iron Chain archetype... The intended goal here was to take an archetype with 3 weirdly fractured themes going for it, Burn, Milling and Stat Boosting, and form it into a coherent whole. Milling is a very weak mechanic these days, as most decks can abuse the graveyard in some shape or form, converting that mill into banishing cards from the deck makes it far more dangerous, although dependent on the field spell. The support also makes use of Iron Chain Dragon's effect to banish Iron Chain monsters, allowing for banished recovery. The general feel this support gives is in a deck that constantly pressurizes the opponent on all fields, depleting their life with steady burn, whittling away their resources with the constant milling the support offers, whilst putting very threatening beaters on board at the same time.
Gaol Forge
Field Spell
When a card would be sent from the Deck to the Graveyard by the effect of a "Chain" card; remove it from play instead. Once per turn, you can return 2 banished "Iron Chain" monsters to your Graveyard; add 1 "Chain" card from your Deck to your hand. Once per turn, target one "Iron Chain" monster whose current ATK is higher than its original ATK; it gains 1000 ATK until the End Phase.
Venomous Chain
Continuous Spell
All "Iron Chain" monsters you control gain 100 ATK. Once per turn, your opponent send cards equal to the number of face-up "Iron Chain" monsters you control from the top of their Deck to the Graveyard.
Immobilizing Chain
Continuous Spell
When this card is activated: you can send 1 "Iron Chain" monster from your Deck to your Graveyard. When a card(s) is sent from your opponent's Deck to the graveyard by a card effect or is banished from their Deck; inflict 300 damage to your opponent for each card sent.
Iron Chain Manacles
Once per turn; you can send 1 card from the top of your opponent's Deck to the Graveyard. Once per turn, you can target 1 monster on the field; reduce it's ATK by it's original Level/Rank x200 and add the same amount to an "Iron Chain" monster you control.
Iron Chain Madman
Once per turn, tribute one "Iron Chain" monster you control; double the current ATK of this card. When this card destroys an opponent's monster by battle, send the top 2 cards of their Deck to the Graveyard.
Iron Chain Warden
When this card destroys a monster by battle; inflict damage to your opponent equal to the amount of "Chain" cards in your Graveyard x200. Once per turn, you can target of your banished 1 Level 4 or lower "Iron Chain" monsters, except "Iron Chain Warden"; Special Summon that card.
Iron Chain Chimaera
1 "Iron Chain" tuner + 1 or more non-Tuner monstersWhen this card is Synchro Summoned, you can banish 2 "Iron Chain" monsters from your Graveyard; select and destroy up to 3 Spell or Trap cards your opponent controls. Once per turn, you can destroy one "Chain" card you control; inflict 800 points of damage to your opponent. When this card inflicts Battle Damage to your opponent; send the top 4 cards of their Deck to the Graveyard.
Iron Chain Hellhound
1 "Iron Chain" tuner + 1 or more non-Tuner monstersOnce per turn, you can banish one Iron Chain monster from your Graveyard and Target 1 monster your opponent controls; Banish it. If that monster was Special Summoned from the Extra Deck, your opponent banishes 3 random cards from their Extra Deck. When this card is destroyed, send 5 cards from the top of your opponent's Deck to their Graveyard. When this card inflicts Battle Damage to your opponent; send the top 5 cards of their Deck to the Graveyard.