Lifecrafter's Bestiary — ruling 1

The draw step is after the upkeep step, so you'll scry 1 before you draw for the turn.

Lifecrafter's Bestiary — ruling 2

Lifecrafter's Bestiary's second triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered.

Lifecrafter's Bestiary — ruling 3

While resolving Lifecrafter's Bestiary's second triggered ability, you can't pay {G} multiple times to draw multiple cards.

Lifecrafter's Bestiary : règles, fonctionnement et interactions (MTG)

Lifecrafter's Bestiary 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

At the beginning of your upkeep, scry 1. Whenever you cast a creature spell, you may pay . If you do, draw a card.

How it works : Lifecrafter's Bestiary

Original English text — Wizards of the Coast / Scryfall

#1February 9, 2017· Wizards of the Coast
The draw step is after the upkeep step, so you'll scry 1 before you draw for the turn.
No other card is named in this ruling.
#2February 9, 2017· Wizards of the Coast
Lifecrafter's Bestiary's second triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered.
No other card is named in this ruling.
#3February 9, 2017· Wizards of the Coast
While resolving Lifecrafter's Bestiary's second triggered ability, you can't pay multiple times to draw multiple cards.
No other card is named in this ruling.