Rather than playing an active role as a monster, it is basically his role as an Equip Spell
Effects that interact with spells (such as Saruman's Trickery) won't affect them
Blue offers mass bounce effects like Cyclonic Rift and Rebuild, whereas red offers creature sweepers like Blasphemous Act, artifact hate like Vandalblast, or even mass land destruction like Ruination
Draconic Rage quickly generates tokens with Vrondiss as commander, which allow strong combinations and harmonize well with many cards in the deck
If this card is destroyed by card effect: You can add 1 non-WIND Wyrm monster from your Deck to your hand
Where Celes, Rune Knight's greatest strengths come into play is when paired with persist or reanimate effects, getting a significant amount of value from sacrificing creatures