Astuces du Wikia
This card can be searcher|searched by Dark Sage, Ancient Gear Drill, Alchemic Magician, "Angmarl the Fiendish Monarch", Left Arm Offering, Watch Dog and The Despair Uranus.
This card's owner can destroy it with cards like Harpies' Hunting Ground, Scrap Dragon or Mystical Space Typhoon to gain access to its second effect.
* This card can also be discarded for the effect of cards like Summoner Monk or Hysteric Party. This can especially help a "Harpie" Deck swarm the field.
Card of Demise is a great card to use with a spare Hysteric Sign. When Card of Demise discards in the End Phase, if you discard Hysteric Sign it will allow you to add up to three "Harpie" cards from your Deck to your Hand.
Mist Valley Falcon, upon declaring an attack, can bounce this card back to your hand, enabling yourself to re-activate it later on.
Combo with Magical Hats to guarantee 3 "Harpie" cards will be added from your Deck to your hand, even if your opponent doesn't attack and destroy it.
* However, it is best to only Special Summon 1 copy of this card, as bringing out a second would not allow yourself to use its effect if it was destroyed.
Upon activation, this card can be countered with Cosmic Cyclone: not only it will not search Elegant Egotist, but it also will be unable to activate its Graveyard effect, since it will be banished.