Blind Zealot — ruling 1

You’ll choose the target creature when the ability goes on the stack. You’ll choose whether or not to sacrifice Blind Zealot when the ability resolves.

Blind Zealot : règles, fonctionnement et interactions (MTG)

Blind Zealot 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

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, destroy target creature that player controls.

How it works : Blind Zealot

Original English text — Wizards of the Coast / Scryfall

#1June 1, 2011· Wizards of the Coast
You’ll choose the target creature when the ability goes on the stack. You’ll choose whether or not to sacrifice Blind Zealot when the ability resolves.
No other card is named in this ruling.