Grim, Heir to the Rot

Defender, Protection from Colored Instants and Sorcerys

When Grim, Heir to the Rot enters the battlefield Each player creates an artifact token named Bone of Grim with Indestructible, Hexproof, and when ever a player deals combat damage to you they gain control of this artifact.

At the beginning of each upkeep draw a card for each card named Bone of Grim you control

At he beginning of each upkeep if you control five or more artifacts named Bone of Grim transform Grim, Heir to the Rot.