Refurbish [Mystery Booster] Bird Scout I must discover the source

I must discover the source of these strange happenings

Target spell's controller exiles it with X delay counters on it

Set: From the Vault: Dragons Type: Creature — Dragon Rarity: Rare Cost: {5}{B}{B} Flying

Set: World Championship Decks 1999 Type: Creature — Dragon Rarity: Rare Cost: {4}{R} Flying

Set: Ravnica Allegiance Type: Creature — Human Cleric Rarity: Uncommon Cost: {W}{B} {1}{W}

Refurbish [Mystery Booster] Bird Scout I must discover the sourceSet: Mystery Booster Type: Sorcery Rarity: Uncommon Cost: {3}{W} Return target artifact card from your graveyard to the battlefield. "There's no reason to buy a new one when I've got the tools to fix the one you've got." Ripu, repair specialist