Smog-Writhed Simoom

When Smog-Writhed Simoom enters the battlefield, sacrifice two lands unless you pay 4 life.
Smog-Writhed Simoom doesn't untap during your untap step.
{2}, Pay 2 life: Untap Smog-Writhed Simoom
{t} Add {c}{c}{c}{c} to your mana pool