Jace, Arcane Strategist — ruling 1

Jace’s first ability can trigger only once each turn. It doesn’t matter whether Jace was on the battlefield when the first card was drawn.

Jace, Arcane Strategist — ruling 2

If an effect instructs you to draw multiple cards, Jace’s first ability triggers after you draw whichever is the second one for the turn (if any). You choose a target for the ability after you’ve drawn all of the cards.

Jace, Arcane Strategist — ruling 3

If a spell or ability causes you to put cards into your hand without specifically using the word “draw,” it’s not a card drawn.

Jace, Arcane Strategist — ruling 4

Once Jace’s last ability has resolved, its effect applies even if Jace has left the battlefield.

Jace, Arcane Strategist : règles, fonctionnement et interactions (MTG)

Jace, Arcane Strategist 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

Whenever you draw your second card each turn, put a +1/+1 counter on target creature you control. +1: Draw a card. −7: Creatures you control can't be blocked this turn.

How it works : Jace, Arcane Strategist

Original English text — Wizards of the Coast / Scryfall

#1May 3, 2019· Wizards of the Coast
Jace’s first ability can trigger only once each turn. It doesn’t matter whether Jace was on the battlefield when the first card was drawn.
No other card is named in this ruling.
#2May 3, 2019· Wizards of the Coast
If an effect instructs you to draw multiple cards, Jace’s first ability triggers after you draw whichever is the second one for the turn (if any). You choose a target for the ability after you’ve drawn all of the cards.
No other card is named in this ruling.
#3May 3, 2019· Wizards of the Coast
If a spell or ability causes you to put cards into your hand without specifically using the word “draw,” it’s not a card drawn.
No other card is named in this ruling.
#4May 3, 2019· Wizards of the Coast
Once Jace’s last ability has resolved, its effect applies even if Jace has left the battlefield.
No other card is named in this ruling.

Interactions with other cards

These cards' text mentions Jace, Arcane Strategist.

Jace's Ruse

Return up to two target creatures to their owner's hand. You may search your library and/or graveyard for a card named Jace, Arcane Strategist, reveal it, and put it into your hand. If you search your library this way, shuffle.