The Sound Of Drums is an Aura that goads a creature and makes it deal double damage, so even if that creature dies, The Sound Of Drums can be returned to the hand for just three mana
Each card pulled is a potential new strategy, a solution to the puzzle that your opponent shapes before you
There is a lot of value packed into this card
Each dragon has unique abilities and strengths, ranging from massive damage-dealers like Drakuseth, Maw of Flames to card-drawing engines like Dragonlord Ojutai
This disparity may indicate that this is a rare alternate Bonus Card from the drop
Then, you need to cast one of the saline-inducing cards in Magic: The Gathering, like Apocalypse or the recently unbanned Worldfire, to get it back onto the battlefield