Effect
When this face-up card on the field is destroyed by your opponent's card (either by battle, and it was face-up at the start of the Damage Step, or by card effect) and sent to the Graveyard: You can Special Summon any "Duston" monsters of your choice from your hand and/or Deck to anywhere on the field, but you must Special Summon an equal number of monsters on each side.
The monster effect of "House Duston" is a Trigger Effect. (It can be activated during the Damage Step.)
This effect does not target.
Monsters Special Summoned by the effect "choose any number of 'Duston' monsters from your hand or Deck, and Special Summon them to both players' fields in equal numbers" are treated as being Special Summoned simultaneously.
If a "House Duston" in face-down Defense Position is attacked, flipped face-up by battle, and destroyed by that battle, you cannot activate the monster effect of "House Duston."
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