Thundering Mightmare (Extended Art) [Innistrad: Crimson Vow Commander] 204 A good Gruul shaman can

A good Gruul shaman can work a whole clan into a frenzy

When Knowledge Vault leaves the battlefield

Its controller may draw up to two cards at the beginning of the next turn's upkeep

Set: Mirrodin Type: Enchantment Rarity: Rare Cost: {2}{B} At the beginning of each player's upkeep

Heron's Flight can only be defended by cards of the chosen type

Thundering Mightmare (Extended Art) [Innistrad: Crimson Vow Commander] 204 A good Gruul shaman canSet: Innistrad: Crimson Vow Commander Type: Creature Horse Spirit Rarity: Rare Cost: {4}{G} 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 creatures has "Whenever an opponent casts a spell, put a +1 +1 counter on this creature."