Rallying Blade is a rare Paladin weapon card that belongs to the "Whispers of the Old Gods" set, which was released on 26.04.2016 and is one of initially 134 cards. The artist of this card was Jeremy Cranford, who also made 2 other artworks for Hearthstone.
The flavor text of the card is the following: As far as blades go, this one is pretty great in the motivation department.
The card is on average to memorize with 88.76% of correct quiz questions.