Kor Outfitter — ruling 1

If either target is illegal by the time the ability resolves, the ability won’t do anything. If both targets are illegal, the ability doesn’t resolve.

Kor Outfitter — ruling 2

You may target Kor Outfitter with its ability.

Kor Outfitter : règles, fonctionnement et interactions (MTG)

Kor Outfitter 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

When this creature enters, you may attach target Equipment you control to target creature you control.

How it works : Kor Outfitter

Original English text — Wizards of the Coast / Scryfall

#1October 1, 2009· Wizards of the Coast
If either target is illegal by the time the ability resolves, the ability won’t do anything. If both targets are illegal, the ability doesn’t resolve.
No other card is named in this ruling.
#2October 1, 2009· Wizards of the Coast
You may target Kor Outfitter with its ability.
No other card is named in this ruling.