If the creature can't attack any of those players but could otherwise attack, it must attack a planeswalker an opponent controls, a battle an opponent protects, or a player who goaded it
This more or less was my exact downfall when I played the Spotlight: Dragons event that featured Tarkir Limited
The real power of this card is in the big old chunk of text though, which reads, Whenever Scourge of Valkas or another Dragon enters the battlefield under your control, it deals X damage to any target, where X is the number of Dragons you control. This basically means that if youve got one Dragon, you can deal one damage to something, two Dragons is two damage and so on
This card will likely see a bit of use solely because of its ability to quickly handle those two cards
Sort Card Type Carracosta #26Rare $5.72 Carracosta #28Rare $0.97 Carracosta #45Uncommon $0.26 Carracosta #38Rare $0.17 Carracosta #23Rare $0.19 Carracosta #23Uncommon $0.07 Carracosta #17Uncommon $0.34 Carracosta - 026/086 #26Rare $0.11 Carracosta - 107/086 #107Illustration Rare $14.18 Carracosta - 111/086 #111Art Rare $6.48 Carracosta (Master Ball Pattern) #23Rare $13.29 Carracosta (Poke Ball Pattern) #23Rare $0.53 Carracosta GX - SM239 #SM239Promo $1.18 Carracosta - 107/086 #107Illustration Rare $14.18 Carracosta (Master Ball Pattern) #23Rare $13.29 Carracosta - 111/086 #111Art Rare $6.48 Carracosta #26Rare $5.72 Carracosta GX - SM239 #SM239Promo $1.18 Carracosta #28Rare $0.97 Carracosta (Poke Ball Pattern) #23Rare $0.53 Carracosta #17Uncommon $0.34