Kianne, Dean of Substance // Imbraham, Dean of Theory — ruling 1

Cards are exiled face up unless an effect states otherwise.

Kianne, Dean of Substance // Imbraham, Dean of Theory — ruling 2

Exiled cards with study counters on them retain their study counters even if Kianne or Imbraham leave the battlefield.

Kianne, Dean of Substance // Imbraham, Dean of Theory — ruling 3

The second abilities of both Kianne and Imbraham look at all cards you own in exile with study counters, even if they were exiled by a different permanent, such as another Kianne or Imbraham.

Kianne, Dean of Substance // Imbraham, Dean of Theory — ruling 4

You may choose 0 as the value of X as you activate Imbraham’s last ability. If you do, you will not exile any cards from your library. However, you may still put a card previously exiled with a study counter on it into your hand.

Kianne, Dean of Substance // Imbraham, Dean of Theory : règles, fonctionnement et interactions (MTG)

Kianne, Dean of Substance // Imbraham, Dean of Theory 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

: Exile the top card of your library. If it's a land card, put it into your hand. Otherwise, put a study counter on it. : Create a 0/0 green and blue Fractal creature token. Put a +1/+1 counter on it for each different mana value among nonland cards you own in exile with study counters on them. Flying , : Exile the top X cards of your library and put a study counter on each of them. Then you may put a card you own in exile with a study counter on it into your hand.

How it works : Kianne, Dean of Substance // Imbraham, Dean of Theory

Original English text — Wizards of the Coast / Scryfall

#1April 16, 2021· Wizards of the Coast
Cards are exiled face up unless an effect states otherwise.
No other card is named in this ruling.
#2April 16, 2021· Wizards of the Coast
Exiled cards with study counters on them retain their study counters even if Kianne or Imbraham leave the battlefield.
No other card is named in this ruling.
#3April 16, 2021· Wizards of the Coast
The second abilities of both Kianne and Imbraham look at all cards you own in exile with study counters, even if they were exiled by a different permanent, such as another Kianne or Imbraham.
No other card is named in this ruling.
#4April 16, 2021· Wizards of the Coast
You may choose 0 as the value of X as you activate Imbraham’s last ability. If you do, you will not exile any cards from your library. However, you may still put a card previously exiled with a study counter on it into your hand.
No other card is named in this ruling.