Horn of Ancients is a 3 Mana Cost Free Neutral Spell card from the Voyage to the Sunken City set!
Add a random Colossal minion to your hand. It costs (1).
Cards Relating to Horn of Ancients
Type: Minion - Cost: 5 - Attack: 5 - Health: 5
Battlecry: If you've cast three spells while holding this, choose an Ancient Relic.