Eye of the Universe

Observe — {t}: Roll 2d6. You must choose one of
the resulting values and do the corresponding:
1: Add {w}. 2: Add {u}. 3: Add {b}.
4: Add {r}. 5: Add {g}.
6: Remove all permanents on the battlefield from the
game, excluding Eye of the Universe and planeswalkers. For every land each player controls at
when this resolves, that player may search their
library for up to the same number of lands and play
them untapped. Then, all players shuffle their
libraries.