Among the Black Templars, there is one whose devotion to the Emperor is above all others. They are gifted with a mythic sword and powers even beyond the already formidable Space Marines. They are the Emperor's Champion, and they're getting a new mini for 40k soon.
From the article:
It is the belief of many within the Imperium that ardent applications of faith will be rewarded. Well, Black Templars fans, what can we say? You have waited patiently, and you have received your just deserts.
Wreathed in divine light, descending from the cold darkness of space with righteous fury, please be upstanding for the living miracle himself – the Emperor’s Champion.