Chosen by Heliod — ruling 1

If the target of an Aura is illegal when it tries to resolve, the Aura won't resolve. The Aura doesn't enter the battlefield, so you won't get to draw a card.

Chosen by Heliod : règles, fonctionnement et interactions (MTG)

Chosen by Heliod 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 +0/+2.

How it works : Chosen by Heliod

Original English text — Wizards of the Coast / Scryfall

#1September 15, 2013· Wizards of the Coast
If the target of an Aura is illegal when it tries to resolve, the Aura won't resolve. The Aura doesn't enter the battlefield, so you won't get to draw a card.
No other card is named in this ruling.