The crests pass through bloodline and everyone who inherited them at the same potency uses them the same way. For most of the cast they're the only one shown to have them on screen, but aren't in the wider world according to the lore as I understand it.
Topic on Talk:Power Systems
As in, not restricted to one specific individual, but restricted to a bloodline?
Hmm. Doesn't look like we have it already defined. And it's a Missing Supertrope to a few things. Maybe have it included with an explicit mention, then split?
What house crests are we talking about here? Arthur, Lancelot, Galahad, Mordred, Gawain, and the others around the Round Table? Gryffindor, Slytherin, Huffelpuff, and Ravenclaw? Something else entirely?
Robkelk, they are talking about Fire Emblem Three Houses. Well the crests do follow into a bloodline but the people descend in the family who inherit them do use them. Each person could be born with a Major or Minor Crest while also each Crest gives their own powers. So each person within a certain family could carry a Crest which would mean a specific people from specific families would use it. An example would be how would be how Edlegard has a Minor Crest of Seiros which give her more Might when using a combat art. Claude has the crest of Riegan which restores 30% of HP when using combat arts. Dimitri inherited the Crest of Blaiddyd which doubles Attack and weapons use when using combat arts. There is also how according to the lore of the game that Crests are said to be power incarnate which means that if we think as some sort powers then they can increase physical strength, regenerative abilities, and defense against attacks.So each Crest depending on the family can give a person a certain divine ability.
Ah, so the bloodline itself only allows to use it. This seems close to Sword in The Stone. Perhaps it needs its own page… if you can figure out how to name it. I remember a few Forgotten Realms examples of magic items tied to specific bloodlines, one even used by an unlikely heir to prove royal descent. And wasn't that sort of thing used in Stargate? That's 3 entries already.
Well they are inherited within a bloodline but not everyone within it has a crest. Those who inherited a crest are given prestige within the society and some sort of power compared to other people within the setting. There is also how there is also different crest with different powers.