I tested this in the app version of the game.

1. The cards under The Dreamer they are destroyed
2. The cards are put back under The Dreamer, per its effect
3. If some other card would interact (Like Savage Mana), that takes precedence and would be destroyed afterwards

I tested this in the app version of the game.

1. The cards under The Dreamer they are destroyed
2. The cards are put back under The Dreamer, per its effect
3. If some other card would interact (Like Savage Mana), that takes precedence and would be destroyed afterwards

Also don't forget that it's the players that choose which effect resolve first and which cards are destroyed first.

Tested in the app, they are destroyed and put back under the dreamer, unless some other card interact. (Like Savage Mana, it would be destroyed afterwards in that precise example and the projection put back under the Dreamer)

I tested this in the app version of the game.

1. The cards under The Dreamer they are destroyed
2. The cards are put back under The Dreamer, per its effect
3. If some other card would interact (Like Savage Mana), that takes precedence and would be destroyed afterwards