Edison format ruling
Decayed Commander
Card effect (current official text)When this card is Normal Summoned: You can Special Summon 1 "Zombie Tiger" from your hand. If this card inflicts battle damage to your opponent by a direct attack: Discard 1 random card from their hand.
Rulings
- Decayed Commander's card-discarding effect only activates when Decayed Commander attacks directly AND deals 1 or more points of Battle Damage to the opponent, so if the opponent uses Kuriboh or Waboku then Decayed Commander's effect does not activate.
- Decayed Commander does not activate its card-discarding effect if destroyed with Ring of Destruction, or if it attacks a face-down monster while equipped with Fairy Meteor Crush, or due to reflect damage from Relinquished, etc.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.