Chord of Calling [Ravnica: City of Guilds] Instant you may change "target black

you may change "target black spell" to "target blue spell

you may put that card onto the battlefield

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} As Pithing Needle enters the battlefield

Set: Friday Night Magic 2012 Type: Sorcery Rarity: Rare Cost: {U/P} ({U/P} can be paid with either {U} or 2 life

Serendib Djinn deals 3 damage to you

Chord of Calling [Ravnica: City of Guilds] Instant you may change "target blackSet: 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.