Magic often masters those who cannot master it.

The Fallen

At the beginning of your upkeep, this creature deals 1 damage to each opponent and planeswalker it has dealt damage to this game.

Masters Edition

At the beginning of your upkeep, The Fallen deals 1 damage to each opponent it has dealt damage to this game.

Chronicles Foreign Black Border

Chronicles

During your upkeep, The Fallen deals 1 damage to each opponent it has previously damaged.

The Dark

During its controller's upkeep, The Fallen does 1 damage to each opponent it has previously damaged.

It stops damaging players and forgets which players it damaged when it leaves the battlefield.

If The Fallen phases out and back in, it remembers which players it has dealt damage to this game.

The Fallen’s ability causes it to deal damage only to opponents of its current controller. If The Fallen has dealt damage to you, and then you gain control of it, you won’t be damaged during your upkeep.

The effect isn’t cumulative. When it resolves, The Fallen deals 1 damage to each opponent previously dealt damage by it, regardless of how many times The Fallen dealt damage to that opponent before.