Flaming seals archtype (if it had a booster pack it would be called flaming seals

[Chu The Shooting star]

some dragons I made for fun!

[Loleo]

I like the dragons and seals you're going for here but right now the seals don't do anything (ritual spells don't stay face-up on the field). Also the effect of being protected from destruction rarely will come up, it would be better if it just couldn't be responded to and gave your ritual dragons some kind of bonus. Would also recommend treating the ritual spells as level 5 monsters for the sake of being used a material for a ritual summon. Your dragons should have "Effect" and a couple of them "Ritual" in their type. The rituals should have an effect preventing them being summoned except by the effects of a "Seal" Ritual spell or the prior dragons. Would recommend allowing the field spell to instead allow you to activate and use the ritual spells from the GY as material by returning them to your deck. instead of 300 ATK how about ATK equal to their DEF + 700 because that is pretty weak + Protection from being targeted by card effects. The first 3 Dragons effects should also activate when tributed if you go with my previous suggestions. Reincarnation should probably dump a "seal" ritual from deck to add 1 "Harmonic" card from your deck to your hand. Also add 1 "Seal" card from GY if tributed. lastly HOPT on armagedons effects.