Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Magic: the Gathering - Chief of the Edge (169/269) - Khans of Tarkir
Product description: Magic: the Gathering is a collectible card game created by Richard Garfield. In Magic, you play the role of a planeswalker who fights other planeswalkers for glory, knowledge, and conquest. Your deck of cards represents all the weapons in your arsenal. It contains the spells you know and the creatures you can summon to fight for you. Card Name : Chief of the Edge Cost : WB Color : Multi-Color Card Type : Creature - Human Warrior Power/Toughness : 3/2 Card Number : 169/269 Card Text : Other Warrior creatures you control get +1/+0.
Product feature: A single individual card from the Magic: the Gathering (MTG) trading and collectible card game (TCG/CCG)., This is of Uncommon rarity., From the Khans of Tarkir set.
Product price: $0.47
Product brand: Magic: The Gathering
Target attributes: Game
Answer: attribute: game
value: planeswalker
source: product description
attribute: game
value: magic: the gathering
source: product brand
attribute: game
value: magic: the gathering
source: product description
attribute: game
value: planeswalkers
source: product description
attribute: game
value: magic: the gathering
source: product title
attribute: game
value: magic: the gathering
source: product feature