Tomb of the Forgotten

{t}: Add {c} to your mana pool.
{2}{g}{g}, {t}: Sacrifice two enchantments or artifacts you control, then each other player may sacrifice two enchantments or artifacts they control. Each player who doesn't sacrifices three creatures or lands.
"The walls here once told the story of a dragon who made peace with us, but even his name has been erased by time..." - Shasta, Curious Denmother