The official blog has revealed the third Noble Knight Exclusive, the archetype’s exclusive Synchro Monster!
Ignoble Knight of High Laundsallyn
Level 5 DARK Warrior-Type Synchro Effect Monster
1 Tuner + 1 or more non-Tuner “Noble Knight” monsters
When this card is Synchro Summoned: You can equip 1 “Noble Arms” Equip Spell Card from your Deck to this card. At the end of the Battle Phase, if this card destroyed a monster by battle and sent it to the Graveyard: You can add 1 “Noble Knight” or “Noble Arms” card from your Deck to your hand. You can only control 1 “Ignoble Knight of High Laundsallyn”.