This is the Mimic Pod HS Rogue Card from the Journey to Un’Goro expansion due for release in April.
It’s a Rogue class spell and the card reads: Draw a card, then add a copy of it to your hand.
You can get Mimic Pod by opening packs from the Journey to Un’Goro set.
*This card looks like a set up for its synergy with The Caverns Below HS Rogue Quest Card.