At the beginning of your precombat main phase, add B to your mana pool for each charge counter on Altar of Shadows. 7, T Destroy target creature. Then put a charge counter on Altar of Shadows.
Color: Artifact
Rarity: R
Cost: 7
Card Type: Artifact
Artist: Sam Wood
Name: Altar of Shadows
Finish: Regular
Card Number: 143/306
Set Name: Mirrodin
At the beginning of your precombat main phase, add B to your mana pool for each charge counter on Altar of Shadows. 7, T Destroy target creature. Then put a charge counter on Altar of Shadows.