Tam, the Possibility 276 (Reality Fracture)

Planeswalker spells you cast cost {1} less to cast. {W}{U}{B}{R}{G}, {T}: Proliferate X times, where X is the number of planeswalker types among planeswalkers you control. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)

NM - $15.90
LP - $12.20
MP - $9.20
HP - $6.10
DMG - $3.10