Mindlink Mech — ruling 1

Mindlink Mech's second ability triggers as its crew ability resolves for the first time each turn.

Mindlink Mech — ruling 2

Mindlink Mech's triggered ability can target only a creature that was tapped to pay its crew cost this turn.

Mindlink Mech — ruling 3

If a continuous effect that isn't a copy effect is modifying Mindlink Mech's power, toughness, or types, that effect will continue to apply to it after it becomes a copy.

Mindlink Mech — ruling 4

Mindlink Mech copies exactly what was printed on the original creature (unless that creature is copying something else or is a token; see below), except that it also has Mindlink Mech's types and is 4/3. It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, or so on.

Mindlink Mech — ruling 5

If Mindlink Mech becomes a copy of a creature that is copying something else, it becomes a copy of whatever that creature is a copy of.

Mindlink Mech — ruling 6

If the creature is a token, Mindlink Mech copies the original characteristics of that token as stated by the effect that put the token onto the battlefield. It doesn't become a token.

Mindlink Mech — ruling 7

If a player crews Mindlink Mech with a nonlegendary permanent that is not normally a creature or Vehicle, the resulting permanent Mindlink Mech becomes is a 0/0 artifact creature and will usually be put into its owner's graveyard. This is because a copy effect can't set the power and toughness of a permanent if being a creature isn't part of that permanent's copiable characteristics. The crew effect is then applied after the copy effect, and it becomes a creature with no defined power or toughness, so both are set to 0.

Mindlink Mech : règles, fonctionnement et interactions (MTG)

Mindlink Mech 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

Flying Whenever this Vehicle becomes crewed for the first time each turn, until end of turn, this Vehicle becomes a copy of target nonlegendary creature that crewed it this turn, except it's 4/3, it's a Vehicle artifact in addition to its other types, and it has flying. Crew 1

How it works : Mindlink Mech

Original English text — Wizards of the Coast / Scryfall

#1February 18, 2022· Wizards of the Coast
Mindlink Mech's second ability triggers as its crew ability resolves for the first time each turn.
No other card is named in this ruling.
#2February 18, 2022· Wizards of the Coast
Mindlink Mech's triggered ability can target only a creature that was tapped to pay its crew cost this turn.
No other card is named in this ruling.
#3February 18, 2022· Wizards of the Coast
If a continuous effect that isn't a copy effect is modifying Mindlink Mech's power, toughness, or types, that effect will continue to apply to it after it becomes a copy.
No other card is named in this ruling.
#4February 18, 2022· Wizards of the Coast
Mindlink Mech copies exactly what was printed on the original creature (unless that creature is copying something else or is a token; see below), except that it also has Mindlink Mech's types and is 4/3. It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, or so on.
No other card is named in this ruling.
#5February 18, 2022· Wizards of the Coast
If Mindlink Mech becomes a copy of a creature that is copying something else, it becomes a copy of whatever that creature is a copy of.
No other card is named in this ruling.
#6February 18, 2022· Wizards of the Coast
If the creature is a token, Mindlink Mech copies the original characteristics of that token as stated by the effect that put the token onto the battlefield. It doesn't become a token.
No other card is named in this ruling.
#7February 18, 2022· Wizards of the Coast
If a player crews Mindlink Mech with a nonlegendary permanent that is not normally a creature or Vehicle, the resulting permanent Mindlink Mech becomes is a 0/0 artifact creature and will usually be put into its owner's graveyard. This is because a copy effect can't set the power and toughness of a permanent if being a creature isn't part of that permanent's copiable characteristics. The crew effect is then applied after the copy effect, and it becomes a creature with no defined power or toughness, so both are set to 0.
No other card is named in this ruling.