Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)
As long as Thundering Mightmare is paired with another creature, each of those creature has "Whenever an opponent casts a spell, put a +1/+1 counter on this creature.
Card Type
Creature — Horse Spirit
Rarity
Rare
Edition
Commander: Innistrad: Crimson Vow
Condition
Near Mint
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