You can’t rearrange the cards. You put them back in the same order or have the whole library shuffled.

If there are less than 5 cards in the library, you look at whatever ones remain and you still get the option to shuffle.

This is not a draw and will not cause a player to lose if there are less than 5 cards in the library.

Visions : règles, fonctionnement et interactions (MTG)

Visions is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Look at the top five cards of target player's library. You may then have that player shuffle that library.

How it works : Visions

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
You can’t rearrange the cards. You put them back in the same order or have the whole library shuffled.
No other card is named in this ruling.
#2October 4, 2004· Wizards of the Coast
If there are less than 5 cards in the library, you look at whatever ones remain and you still get the option to shuffle.
No other card is named in this ruling.
#3October 4, 2004· Wizards of the Coast
This is not a draw and will not cause a player to lose if there are less than 5 cards in the library.
No other card is named in this ruling.

Interactions with other cards

These cards' text mentions Visions.

Shadow of the Goblin

Unreliable Visions — At the beginning of your first main phase, discard a card. If you do, draw a card. Undying Vengeance — Whenever you play a land or cast a spell from anywhere other than your hand, this enchantment deals 1 damage to each opponent.