Show and Tell — ruling 1

The current player chooses first, then each other player chooses in turn order. A player does not have to reveal the chosen card, so long as it is clear *which* card was chosen. After all choices are made, the cards are put onto the battlefield simultaneously.

Show and Tell — ruling 2

If the cards being put onto the battlefield also require choices, those choices are made after all players choose their card. The active player makes choices for their card (if any), then the other players (if any) in turn order.

Show and Tell — ruling 3

Players choose cards during resolution, not announcement.

Show and Tell : règles, fonctionnement et interactions (MTG)

Show and Tell 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

Each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield.

How it works : Show and Tell

Original English text — Wizards of the Coast / Scryfall

#1April 1, 2008· Wizards of the Coast
The current player chooses first, then each other player chooses in turn order. A player does not have to reveal the chosen card, so long as it is clear *which* card was chosen. After all choices are made, the cards are put onto the battlefield simultaneously.
No other card is named in this ruling.
#2October 4, 2004· Wizards of the Coast
If the cards being put onto the battlefield also require choices, those choices are made after all players choose their card. The active player makes choices for their card (if any), then the other players (if any) in turn order.
No other card is named in this ruling.
#3October 4, 2004· Wizards of the Coast
Players choose cards during resolution, not announcement.
No other card is named in this ruling.