If you survive a slinger attack, the slinger wished you to live.

The List

Ghitu Slinger

Echo {2}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Ghitu Slinger enters, it deals 2 damage to any target.

Eternal Masters

Echo {2}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Ghitu Slinger enters the battlefield, it deals 2 damage to target creature or player.

Urza's Legacy

Echo (During your next upkeep after this permanent comes under your control, pay its casting cost or sacrifice it.)
When Ghitu Slinger comes into play, it deals 2 damage to target creature or player.