Avos, Shrine of the Sands

{t}, Pay 1 life, Sacrifice Avos: Search your
library for a nonlegendary land card, put it onto
the battlefield, then shuffle your library.
{t}: Add {c} for each legendary land you control.
{t}, Sacrifice Avos: Destroy target nonbasic land.
As long as this ability is on the stack, players
can't cast spells or activate abilities that aren't
mana abilities.