Diamond Pick-Axe 143/291 (The Lost Caverns of Ixalan)

Indestructible (Effects that say "destroy" don't destroy this Equipment.) Equipped creature gets +1/+1 and has "Whenever this creature attacks, create a Treasure token." (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Equip {2}

NM - $5.20
LP - $4.20
MP - $3.20
HP - $2.10
DMG - $1.10