Precursor box

{t}: Add an Eden counter on Precursor box
{w}{t}: remove 3 counters -
Each player's land taps for colorless
mana until your next upkeep
{r}{t}: remove 2 counters - Each player sacrifices a nonbasic land
and searches their library for a basic land.
{g}{t}: remove 1 counter - lands you control have
indestructable until end of turn.