United Stadium, Reborn

When this creature transforms into United Stadium, Reborn, each opponent sacrifices a land. If those
lands would be put into the graveyard, exile them
instead.
{t}: Add one mana of any color that a land exiled
with United Stadium, Reborn could produce.
{r/w}{r/w}{t}: create a red 2/1 United player token with
haste. Activate this ability only as a sorcery.