Jester's Scepter — ruling 1

You can see the cards that are exiled with Jester’s Scepter, but no one else can.

Jester's Scepter — ruling 2

Because the cards that are exiled are not hidden to you, you can choose which one to put into its owner’s graveyard when you activate the second ability.

Jester's Scepter — ruling 3

When Jester’s Scepter’s second ability is activated, any of the exiled cards may be put into its owner’s graveyard, and any spell may be targeted, whether or not the card and the spell have the same name. If they don’t have the same name, the effect does nothing. The spell’s controller and the owner of the card put into a graveyard this way may be different.

Jester's Scepter — ruling 4

If half of a split card is cast (for example, Hit), and you put one of those split cards into its owner’s graveyard with Jester’s Scepter (for example, Hit/Run), the spell is countered.

Jester's Scepter : règles, fonctionnement et interactions (MTG)

Jester's Scepter 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

When this artifact enters, exile the top five cards of target player's library face down. You may look at those cards for as long as they remain exiled. , , Put a card exiled with this artifact into its owner's graveyard: Counter target spell if it has the same name as that card.

How it works : Jester's Scepter

Original English text — Wizards of the Coast / Scryfall

#1July 15, 2006· Wizards of the Coast
You can see the cards that are exiled with Jester’s Scepter, but no one else can.
No other card is named in this ruling.
#2July 15, 2006· Wizards of the Coast
Because the cards that are exiled are not hidden to you, you can choose which one to put into its owner’s graveyard when you activate the second ability.
No other card is named in this ruling.
#3July 15, 2006· Wizards of the Coast
When Jester’s Scepter’s second ability is activated, any of the exiled cards may be put into its owner’s graveyard, and any spell may be targeted, whether or not the card and the spell have the same name. If they don’t have the same name, the effect does nothing. The spell’s controller and the owner of the card put into a graveyard this way may be different.
No other card is named in this ruling.
#4July 15, 2006· Wizards of the Coast
If half of a split card is cast (for example, Hit), and you put one of those split cards into its owner’s graveyard with Jester’s Scepter (for example, Hit/Run), the spell is countered.
No other card is named in this ruling.