Increase this card's Level by 4 during your opponent's turn only. When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can send 1 Level 7 or 8 Dragon-Type monster from your Deck to the Graveyard. You can send 1 card from your hand to the Graveyard, then target 1 Level 7 or 8 Dragon-Type monster in your Graveyard; send this card to the Graveyard, and if you do, Special Summon that monster. You can only use this effect of "Dragon Knight of Creation" once per turn.
The Red-Eyes support cards can already help make things easier by sending a Red-Eyes from your hand or deck. You can then special summon it right away using Dragon Knight of Creation's effect if you need to.
Making use of it's first effect, it can flip all monsters on the field to face-down. Flipping a monster to face-down position has many effects: Removes a monster's equip, resets their stats back to their original, prevents the use of certain spell/trap cards that require them to be face-up (like Ninjitsu Art of Transformation), and can re-use flip effects. This can help Dragon Knight of Creation destroy your opponent's monster, especially since a lot of monsters have lower defense. It also doesn't even target monsters, making them useful against multiple monsters even if they are untargetable like Hazy Flame monsters.
Since Arkbrave Dragon also has an effect that can help with special summoning a level 7 or 8 Dragon-type monster, you can use Dragon Knight of Creation to special summon Arkbrave to the field, or Dragon Knight of Creation's second effect to send Arkbrave to the graveyard, which will still activate Arkbrave Dragon's effect. If it gets destroyed then it's a set up to let you special summon another level 7 or 8 from the grave to the field. Dragon's Rebirth is also useful since it lets you special summon a Dragon-type monster from hand or grave.
Tyrant Wing helps with the attack increase and can make the equipped monster attack twice, or use it during your opponent's turn to destroy the attacking monster for the second effect on their turn. Stamping Destruction helps with destroying your opponent's back row to attack safely.
Sends from your Deck to your Graveyard / Sends from your hand to your Graveyard / Sends itself from field to Graveyard
Blue-Eyes Felgrand decks will be a thing now. I love this card, since it works so well with any dragon decks. Probably won't be used in Red-Eyes though, since Red-Eyes already has Graveyard summoning covered
okay probably not a good idea to leave this card on the feild for long
I want Divine Dragon Lord so badly it hurts. Now, since all the Felgrand monsters that haven't been released will be in the next structure deck except for The Divine Dragon Lord, given it's status and strength it'll probably be the cover UR for an upcoming Main Box and said box will also probably include Gospel of Revival (or Return of the Dragon Lords) to further buff the Felgrand Archetype.