Herald's Horn [Commander Masters] Tyranid Mutant If that card's mana value

If that card's mana value is less than or equal to the number of experience counters you have

{T}: Add {U}{U}

They hope to one day enclose the entire forest within its walls

{0}: Destroy Lethal Vapors

Set: Beta Edition Type: Enchantment Rarity: Rare Cost: {1}{U} Players skip their untap steps

Herald's Horn [Commander Masters] Tyranid Mutant If that card's mana valueSet: Commander Masters Type: Artifact Rarity: Uncommon Cost: {3} As Herald's Horn enters the battlefield, choose a creature type. Creature spells you cast of the chosen type cost {1} less to cast. At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.