Mindculling — ruling 1

You must be able to target an opponent to cast Mindculling. If that opponent is an illegal target when Mindculling tries to resolve, it’ll be countered and will have no effect. You won’t draw two cards.

Mindculling — ruling 2

If the opponent has one card in hand, that player will discard that card and you will draw two cards. If the opponent has no cards in hand, you will draw two cards.

Mindculling : règles, fonctionnement et interactions (MTG)

Mindculling 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

You draw two cards and target opponent discards two cards.

How it works : Mindculling

Original English text — Wizards of the Coast / Scryfall

#1June 1, 2011· Wizards of the Coast
You must be able to target an opponent to cast Mindculling. If that opponent is an illegal target when Mindculling tries to resolve, it’ll be countered and will have no effect. You won’t draw two cards.
No other card is named in this ruling.
#2June 1, 2011· Wizards of the Coast
If the opponent has one card in hand, that player will discard that card and you will draw two cards. If the opponent has no cards in hand, you will draw two cards.
No other card is named in this ruling.