Duplicant — ruling 1

Duplicant's base power and toughness change to the imprinted card's power and toughness. Counters and other effects that modify Duplicant's power and toughness still apply.

Duplicant — ruling 2

Abilities that define a * in a creature's power and toughness apply while that card is in exile, but abilities that add or subtract power and toughness don't. For example, the ability of Crusader of Odric applies to determine Duplicant's power and toughness, but the ability of Death's Shadow doesn't.

Duplicant — ruling 3

Duplicant's power and toughness are constantly updated if the exiled card's power and/or toughness change.

Duplicant — ruling 4

If a melded permanent or a merged permanent is exiled by Duplicant's triggered ability, that ability's controller chooses the relative timestamp of the exiled cards. Duplicant looks at the information of the one with the latest timestamp.

Duplicant : règles, fonctionnement et interactions (MTG)

Duplicant 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

Imprint — When this creature enters, you may exile target nontoken creature. As long as a card exiled with this creature is a creature card, this creature has the power, toughness, and creature types of the last creature card exiled with it. It's still a Shapeshifter.

How it works : Duplicant

Original English text — Wizards of the Coast / Scryfall

#1August 7, 2020· Wizards of the Coast
Duplicant's base power and toughness change to the imprinted card's power and toughness. Counters and other effects that modify Duplicant's power and toughness still apply.
No other card is named in this ruling.
#2August 7, 2020· Wizards of the Coast
Abilities that define a * in a creature's power and toughness apply while that card is in exile, but abilities that add or subtract power and toughness don't. For example, the ability of Crusader of Odric applies to determine Duplicant's power and toughness, but the ability of Death's Shadow doesn't.
No other card is named in this ruling.
#3August 7, 2020· Wizards of the Coast
Duplicant's power and toughness are constantly updated if the exiled card's power and/or toughness change.
No other card is named in this ruling.
#4August 7, 2020· Wizards of the Coast
If a melded permanent or a merged permanent is exiled by Duplicant's triggered ability, that ability's controller chooses the relative timestamp of the exiled cards. Duplicant looks at the information of the one with the latest timestamp.
No other card is named in this ruling.