Artefacto

, recabar pruebas 3: Agrega un maná de cualquier color. Pon un contador de apertura sobre el Críptex. (Para recabar pruebas 3, exilia cartas de tu cementerio con valor de maná total de 3 o más.)
Sacrificar el Críptex: Escruta 3 y luego roba tres cartas. Activa esto solo si el Críptex tiene cinco o más contadores de apertura sobre él.
Once you've announced that you're casting a spell, players can't take actions until you've finished doing so. Notably, opponents can't try to remove cards from your graveyard to stop you from collecting evidence.
Cryptex's first ability is a mana ability. It doesn't use the stack and can't be responded to.
If you can't exile enough cards to meet or exceed the required mana value, you can't choose to collect evidence at all.