Chord of Calling [Ravnica: City of Guilds] Dark Ascension Promos sacrifice Masticore unless you discard

sacrifice Masticore unless you discard a card

Modular 1 (This creature enters the battlefield with a +1/+1 counter on it

Set: Commander 2011 Type: Creature — Human Wizard Rarity: Rare Cost: {G} At the beginning of each player's precombat main phase

Set: Vanguard Series Type: Vanguard Rarity: Rare Each noncreature artifact you control is an artifact creature with power and toughness each equal to its mana value

"Know your foes' strengths as well as their weaknesses

Chord of Calling [Ravnica: City of Guilds] Dark Ascension Promos sacrifice Masticore unless you discardSet: Ravnica: City of Guilds Type: Instant Rarity: Rare Cost: {X}{G}{G}{G} Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.