Orion can place a damage redirection on an ally that sends most of the damage taken by that ally to Orion while simultaneously shielding Orion from damage. He can also place a bomb on allies that will explode when the ally takes damage and use a healing ability, with his basic attack calling down damage in a wider area as he builds up his energy. His ultimate, meanwhile, will do damage in a wide area and heal Orion while also removing all of his energy. It’s a bit of a deviation from usual support characters, but it you prefer someone with a more elaborate set of mechanics, check Orion out when he goes live tomorrow.
Source: Official Site