He does Episodes 7, 16, 23, 36, 41 and 49 (I haven't watched this specifically so I can't give an opinion.)
"If thou seeks our power
The great power that dwells
Dwells within thee
Offer it up unto us
And we shalt be resurrected".
It's not impossible to do this, but this is a detail put onto a card nearly no one could read until recent cuts. Someone cared to do this.
All of the Dragons are, ultimately, as to circle back to the Atlantis theme of the season.
"What if our hero doesn't know shit about cards so the fans can learn the card game with him. 8D???"