This is the Cornered Sentry HS Warrior Card from the Journey to Un’Goro expansion due for release in April.
It’s a Warrior class minion and the card reads: Taunt. Battlecry: Summon three 1/1 Raptors for your opponent.
You can get Cornered Sentry by opening packs from the Journey to Un’Goro set.
*Same stats and cost as Dirty Rat, the downside isn’t as bad in most instances.