Pack's Disdain — ruling 1

Note that this spell counts the number of permanents you control of the chosen type, not just the number of creatures you control. It will also take your kindred permanents of the chosen type into account.

Pack's Disdain — ruling 2

You choose a target for this spell as you cast it, but you don't choose a creature type until the spell resolves.

Pack's Disdain : règles, fonctionnement et interactions (MTG)

Pack's Disdain 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

Choose a creature type. Target creature gets -1/-1 until end of turn for each permanent of the chosen type you control.

How it works : Pack's Disdain

Original English text — Wizards of the Coast / Scryfall

#1April 1, 2008· Wizards of the Coast
Note that this spell counts the number of permanents you control of the chosen type, not just the number of creatures you control. It will also take your kindred permanents of the chosen type into account.
No other card is named in this ruling.
#2April 1, 2008· Wizards of the Coast
You choose a target for this spell as you cast it, but you don't choose a creature type until the spell resolves.
No other card is named in this ruling.