Before: [Your Turn] For each Digimon card with [Etemon] in its name in your trash, this Digimon gets +1000 DP.
[On Deletion] trigger <De-Digivolve 1> 1 of your opponent's Digimon. (Trash the top card. You can't trash past level 3 cards.).
After: [Opponent's Turn] For each Digimon card with [Etemon] in its name in your trash, this Digimon gets +1000 DP.
[On Deletion] trigger <De-Digivolve 1> 1 of your opponent's Digimon. (Trash the top card. You can't trash past level 3 cards.).
Read as the errata when playing.