Rules Text Contains: Defender (This creature can't attack)
When Wall of Lost Thoughts enters, target player mills four cards. (They put the top four cards of their library into their graveyard.)
Flavor:Those who intrude upon the Dimir seldom remember that they have done so.
![Wall of Lost Thoughts [J25 - 384] - Cartes Sportives Rive Sud](http://cartessportivesrivesud.com/cdn/shop/files/wall-of-lost-thoughts-j25-384-magic-the-gathering-singles-8303837-543636_{width}x.jpg?v=1746874635)
![Wall of Lost Thoughts [J25 - 384] - Cartes Sportives Rive Sud](http://cartessportivesrivesud.com/cdn/shop/files/wall-of-lost-thoughts-j25-384-magic-the-gathering-singles-8303837-543636_1024x.jpg?v=1746874635)