Erelhei-Cinlu, Dark Elf City

Erelhei-Cinlu, Dark Elf City enters tapped unless you sacrifice X creatures. Create a 1/1 Drow Warrior tokens for each creature sacrificed this way.
{t}{c}{c} or Pay 2 life {t}{u}{u}or{b}{b}
Erelhei-Cinlu is a subterranean city known for its intrigue and danger. It is a place of constant power struggles among Drow noble families.