Is there any chance that the community could come together on a standard format for rules quotes? Individuality is great, but so is consistency.
21.2a This is the relevant piece of the rule. [...]
I favor the format above, but even I have not demonstrated consistency in its use. Other variations include, but are by no means limited to
21.2a This is the relevant piece of the rule. [...]
21.2a This is the relevant piece of the rule. This is the irrelevant piece of the rule.
21.2a This is a rule with a bolded identifier.
This is a rule whose identifier is mentioned in a preceding sentence.
CR 21.2a This is a rule.
I do not think it is necessary to edit other posts to conform to a chosen style. I just think it would be nice to have a style guideline for posters that want to use it. Again, I want to stress that this meta post is not intended to force everyone to use a particular style. If authors want to deviate, let them.
This is specific to Magic: the Gathering, but if you have a generalized solution that extends beyond Magic, more power to you.