Necropolis Fiend 190/413 (Commander: Tarkir: Dragonstorm)

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Flying {X}, {T}, Exile X cards from your graveyard: Target creature gets -X/-X until end of turn.

NM - $1.50
LP - $1.20
MP - $0.90
HP - $0.60
DMG - $0.40