Sheltering Boughs — ruling 1

If the creature the Aura spell targets isn't a legal target as it tries to resolve, Sheltering Boughs is put into its owner's graveyard from the stack. It doesn't enter the battlefield and you won't draw a card.

Sheltering Boughs : règles, fonctionnement et interactions (MTG)

Sheltering Boughs 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

Enchant creature When this Aura enters, draw a card. Enchanted creature gets +1/+3.

How it works : Sheltering Boughs

Original English text — Wizards of the Coast / Scryfall

#1November 19, 2021· Wizards of the Coast
If the creature the Aura spell targets isn't a legal target as it tries to resolve, Sheltering Boughs is put into its owner's graveyard from the stack. It doesn't enter the battlefield and you won't draw a card.
No other card is named in this ruling.