First off, to read this properly you'll need to press the Source button underneath this reply, but:

[](/r/wildhockey) gives you the logo. Replace wildhockey with a team's subreddit to get their logo. Just typing in the team's subreddit will also give you the logo+sub (Ex: /r/wildhockey), but having the brackets/parentheses makes it just the logo.

The various fonts come from using # signs, examples (They show up differently in a post then they do in a reply):

##Test
###Test
####Test