Super Quantum Red Layer - This card is good for starting link plays since you can summon it and then any other of your monsters for an Isolde. It can bring a copy of itself from the GY to the hand, so it's good at combo-ing with Astolfo.
Sublimation Knight - Sublimation Knight is one of the best cards in this deck, since when it's summoned, it can let you bring out a free Isolde thanks to good synergy with Squeaknight. If it isn't in your starting hand, you can use Isolde's second effect to discard 3 Equips from the deck to summon out Sublimation Knight and continue your link plays.
Squeaknight - Squeaknight is almost solely here to combo with Sublimation Knight, but it also lets you bring out some syncrho monsters if you ever want to.
Infernoble Knight Renaud - Renaud is an amazing card, being a free special summon in almost any hand an can also return an equip spell from the GY, which is situationally useful.
Infernoble Knight Astolfo - Astolfo combos well with Isolde and Red Layer, being able to use the card they add to summon itself. It is also a combo piece with DDR, being a neat tech combo.
Boost Warrior - Boost Warrior is something you can use your normal summon on, or you can summon it if you have a special summoned Squeaknight on your field.
Fire Flint Lady - This card is a free special summon as long as you have any fire warrior on the field, which is easy for this deck. It can also be used to bring out Red Layer or Sublimation for extending Synchro plays.
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