Metallic Mimic 308/370 (Commander: The Lost Caverns of Ixalan)

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Each other creature you control of the chosen type enters with an additional +1/+1 counter on it.

NM - $6.50
LP - $5.20
MP - $3.90
HP - $2.60
DMG - $1.50