Bone Rattler - Symbol (CMB1) from Mystery Booster Playtest Cards 2019, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Ira Humphrey
• Card Text:
  When CARDNAME is put into your graveyard from anywhere, exile it. When you do, create four Reassembling Skeleton token cards and put them into your graveyard.