Black Market (PIP 711)

Enchantment • Mana cost: {3}{B}{B} • Fallout • Rare

Whenever a creature dies, put a charge counter on this enchantment.
At the beginning of your first main phase, add {B} for each charge counter on this enchantment.

There's very little that merchants won't buy—and even less that wastelanders won't sell.

Illustrated by Irina Nordsol.