Sands of the Ravenous One

When mana is added to your mana pool add {c} instead.
{c}{c}{c}{c}: Sands of the Ravenous One becomes a 3/3 Wurm creature with your choice of Annihilator 1, non-basic landwalk, or Hexproof until end of turn.
{c}{c}{c}{c}{c}{c}: Each player sacrifices a colored permanent or a land. Remove a counter of each type from all players & permanents then put that many +1/+1 counters on the Ravenous One.