Obelisk of Urd 115 (Commander: Zendikar Rising)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) As this artifact enters, choose a creature type. Creatures you control of the chosen type get +2/+2.

NM - $3.00
LP - $2.50
MP - $2.00
HP - $1.50
DMG - $1.50