Begin the Endgame

Each player reveal cards from the top of their
library until they reveal cards with a total mana
value of equal to or greater than their life total.
they may play these cards without paying their
mana cost.
Overload {w}{w}{u}{u}{b}{b}{r}{r}{g}{g} (you may
cast this spell by paying its overload cost. If you
do, replace 'Each' in its text with 'Target'.)