Thundering Mightmare (Extended) [Innistrad: Crimson Vow Commander]

Set: Innistrad: Crimson Vow Commander Type: Creature — Horse Spirit Rarity: Rare Cost: {4}{G} SoulbondAs long as Thundering Mightmare is paired with another creature, each of those creatures has “Whenever an opponent casts a spell, put a +1/+1 counter on this creature.”