No, you shuffle your deck (and in tournament play your opponent will cut your deck as well). There are some cards which allow you to partially manipulate or ins

No, you shuffle your deck (and in tournament play your opponent will cut your deck as well). There are some cards which allow you to partially manipulate or inspect your deck by looking at the top card and/or putting cards on the top or bottom, as well as cards which allow you search your deck for cards, but anything which allows you to look at your whole deck will generally also require you to shuffle it afterwards. (there are combos which allow you to stack your whole deck but they're generally not as good as combos which just let you draw your whole deck).