Michiko Konda, Truth Seeker — ruling 1

One permanent is sacrificed each time an opponent’s source deals damage to Michiko Konda’s controller. The amount of damage doesn’t matter.

Michiko Konda, Truth Seeker — ruling 2

Sources that deal damage multiple times (such as creatures with double strike) will trigger Michiko Konda multiple times.

Michiko Konda, Truth Seeker — ruling 3

Spells that deal damage repeatedly trigger Michiko Konda’s ability each time they deal damage. For example, a Glacial Ray spliced onto another Glacial Ray triggers the ability twice (once for each “2 damage” event from the Glacial Ray).

Michiko Konda, Truth Seeker : règles, fonctionnement et interactions (MTG)

Michiko Konda, Truth Seeker 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 a source an opponent controls deals damage to you, that player sacrifices a permanent of their choice.

How it works : Michiko Konda, Truth Seeker

Original English text — Wizards of the Coast / Scryfall

#1June 1, 2005· Wizards of the Coast
One permanent is sacrificed each time an opponent’s source deals damage to Michiko Konda’s controller. The amount of damage doesn’t matter.
No other card is named in this ruling.
#2June 1, 2005· Wizards of the Coast
Sources that deal damage multiple times (such as creatures with double strike) will trigger Michiko Konda multiple times.
No other card is named in this ruling.
#3June 1, 2005· Wizards of the Coast
Spells that deal damage repeatedly trigger Michiko Konda’s ability each time they deal damage. For example, a Glacial Ray spliced onto another Glacial Ray triggers the ability twice (once for each “2 damage” event from the Glacial Ray).
No other card is named in this ruling.