Donatello, Gadget Master — ruling 1

Although a creature put onto the battlefield this way is attacking, it was never declared as an attacking creature. Abilities that trigger whenever a creature attacks won't trigger when that creature enters attacking.

Donatello, Gadget Master — ruling 2

If the artifact copied by the token had any "when [this artifact] enters" abilities, the token also has those abilities, and they'll trigger when it's created. Similarly, any "as [this artifact] enters" or "[this artifact] enters with" abilities that the token has copied will also work.

Donatello, Gadget Master — ruling 3

If the copied artifact is copying something else, then the token enters as whatever that artifact copied.

Donatello, Gadget Master — ruling 4

Spells can only be cast for their sneak costs any time you could play an instant during the declare blockers step on your turn (after your opponent has decided whether to block).

Donatello, Gadget Master — ruling 5

The token copies exactly what was printed on the original artifact (unless that artifact is copying something else or is a token; see below). It doesn't copy whether that artifact is tapped or untapped, whether it has any counters on it, or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on.

Donatello, Gadget Master — ruling 6

If the copied artifact is a token, the new token that's created copies the original characteristics of that token as stated by the effect that created the token.

Donatello, Gadget Master — ruling 7

If a creature spell's sneak cost was paid, the creature it becomes enters tapped and attacking the same player, planeswalker, or battle as the creature that was returned to its owner's hand to pay its sneak cost. This is a rule specific to sneak; in other cases, when a creature is put onto the battlefield attacking, that creature's controller chooses which player, planeswalker, or battle it's attacking.

Donatello, Gadget Master — ruling 8

If the copied artifact has {X} in its mana cost, X is 0.

Donatello, Gadget Master : règles, fonctionnement et interactions (MTG)

Donatello, Gadget Master 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

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.) Whenever Donatello deals combat damage to a player, create a token that's a copy of target artifact you control.

How it works : Donatello, Gadget Master

Original English text — Wizards of the Coast / Scryfall

#1January 27, 2026· Wizards of the Coast
Although a creature put onto the battlefield this way is attacking, it was never declared as an attacking creature. Abilities that trigger whenever a creature attacks won't trigger when that creature enters attacking.
No other card is named in this ruling.
#2January 27, 2026· Wizards of the Coast
If the artifact copied by the token had any "when [this artifact] enters" abilities, the token also has those abilities, and they'll trigger when it's created. Similarly, any "as [this artifact] enters" or "[this artifact] enters with" abilities that the token has copied will also work.
No other card is named in this ruling.
#3January 27, 2026· Wizards of the Coast
If the copied artifact is copying something else, then the token enters as whatever that artifact copied.
Card named in this ruling
Copy
#4January 27, 2026· Wizards of the Coast
Spells can only be cast for their sneak costs any time you could play an instant during the declare blockers step on your turn (after your opponent has decided whether to block).
No other card is named in this ruling.
#5January 27, 2026· Wizards of the Coast
The token copies exactly what was printed on the original artifact (unless that artifact is copying something else or is a token; see below). It doesn't copy whether that artifact is tapped or untapped, whether it has any counters on it, or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on.
Card named in this ruling
Copy
#6January 27, 2026· Wizards of the Coast
If the copied artifact is a token, the new token that's created copies the original characteristics of that token as stated by the effect that created the token.
No other card is named in this ruling.
#7January 27, 2026· Wizards of the Coast
If a creature spell's sneak cost was paid, the creature it becomes enters tapped and attacking the same player, planeswalker, or battle as the creature that was returned to its owner's hand to pay its sneak cost. This is a rule specific to sneak; in other cases, when a creature is put onto the battlefield attacking, that creature's controller chooses which player, planeswalker, or battle it's attacking.
No other card is named in this ruling.
#8January 27, 2026· Wizards of the Coast
If the copied artifact has in its mana cost, X is 0.
No other card is named in this ruling.