Obelisk of Urd

Obelisk of Urd {6}

Artifact
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 Obelisk of Urd enters the battlefield, choose a creature type.
Creatures you control of the chosen type get +2/+2.
Set: [M15] Magic 2015 Core Set ( R · #222 )