Soul Echo enters the battlefield with X echo counters on it.
You don't lose the game for having 0 or less life.
At the beginning of your upkeep, sacrifice Soul Echo if there are no echo counters on it. Otherwise, target opponent may choose that for each 1 damage that would be dealt to you until your next upkeep, you remove an echo counter from Soul Echo instead.
Near Mint - $1.40
Near Mint Non-English - $1.40
Lightly Played - $1.30
Lightly Played Non-English - $1.30
Played - $1.00
Played Non-English - $1.00
Heavily Played - $0.90
Heavily Played Non-English - $0.90
Damaged - $0.70
Damaged Non-English - $0.70