Mindblade Render — ruling 1

Mindblade Render's ability triggers only once, regardless of how many opponents were dealt damage, how much damage they were dealt, or how many Warriors dealt damage.

Mindblade Render — ruling 2

Mindblade Render's ability triggers if a Warrior an opponent controls deals combat damage to another player who's also your opponent. You can't choose not to draw a card or lose 1 life if this happens.

Mindblade Render : règles, fonctionnement et interactions (MTG)

Mindblade Render 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

Whenever your opponents are dealt combat damage, if any of that damage was dealt by a Warrior, you draw a card and you lose 1 life.

How it works : Mindblade Render

Original English text — Wizards of the Coast / Scryfall

#1June 8, 2018· Wizards of the Coast
Mindblade Render's ability triggers only once, regardless of how many opponents were dealt damage, how much damage they were dealt, or how many Warriors dealt damage.
No other card is named in this ruling.
#2June 8, 2018· Wizards of the Coast
Mindblade Render's ability triggers if a Warrior an opponent controls deals combat damage to another player who's also your opponent. You can't choose not to draw a card or lose 1 life if this happens.
No other card is named in this ruling.