Echoes of the Future

Echoes of the Future enters the battlefield with 3
time counters on it.
At the beginning of your upkeep, remove a time
counter from Echoes of the Future, and exile the
top card of your library face down.
Whenever one or more creatures you control
deal combat damage to a player, play a random
card exiled with Echoes of the Future without
paying its mana cost.
At the end of your turn, if Echoes of the Future
has no time counters on it, you lose the game.