Chasm of Iteration

Chasm of Iteration is black, and can't enchant nonbasic lands.
At the beginning of your upkeep, create a copy of enchanted land.
{7}: Create a copy of target non-enchantment permanent you control.
{b}{b}, sacrifice seven nonland permanents
with the same name: target player loses 20 life.
Vastness is just another kind of darkness.