Giant's Amulet
Artifact — Equipment
When this Equipment enters, you may pay 
. If you do, create a 4/4 blue Giant Wizard creature token, then attach this Equipment to it.
Equipped creature gets +0/+1 and has "This creature has hexproof as long as it's untapped."
Equip 
Joseph Meehan
Kaldheim (KHM)
• #59Rulings
You decide whether to pay {3}{U} as the enters-the-battlefield ability resolves. If you do, you immediately create the Giant Wizard creature token and attach Giant's Amulet to it. No players may respond to your decision to pay or not, and no player may take actions during this process.
(wotc • 2021-02-05)
The Giant Wizard creature token enters the battlefield as a 4/4 creature. Any abilities that trigger when a creature with a certain toughness enters the battlefield will see the token enter as a 4/4 creature.
(wotc • 2021-02-05)
Rulings
You decide whether to pay {3}{U} as the enters-the-battlefield ability resolves. If you do, you immediately create the Giant Wizard creature token and attach Giant's Amulet to it. No players may respond to your decision to pay or not, and no player may take actions during this process.
(wotc • 2021-02-05)
The Giant Wizard creature token enters the battlefield as a 4/4 creature. Any abilities that trigger when a creature with a certain toughness enters the battlefield will see the token enter as a 4/4 creature.
(wotc • 2021-02-05)