2005-06-01
One permanent is sacrificed each time an opponent's source deals damage to Michiko Konda's controller. The amount of damage doesn't matter.
2005-06-01
Sources that deal damage multiple times (such as creatures with double strike) will trigger Michiko Konda multiple times.
2005-06-01
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).