This is the Tortollan Shellraiser HS Priest Card from the Journey to Un’Goro expansion due for release in April.
It’s a Priest class minion and the card reads: Taunt. Deathrattle: Give a random friendly minion +1/+1.
You can get Tortollan Shellraiser by opening packs from the Journey to Un’Goro set.
*A strong deathrattle minion to interact with the Awaken the Makers quest card and a strong taunt to stall the game.