You must. If there are no other cards in either player's m/t zones, then you must destroy Harpie's Hunting Ground?
Harpie's Hunting Ground looks for single instances of Harpie Lady or Harpie Lady Sisters being summoned, it doesn't matter how many are summoned by that instance. If during a chain's resolution, two Harpie Lady cards are summoned at two different chain links, then Harpie's Hunting Ground sees two such instances and will activate its trigger-like effect twice. But if Hysteric Party resolves, summoning multiple Harpie Lady cards, this is just one single instance. It will only activate once.
The Harpies have different versions of their creations. two are the most commonly heard. The harpies were once nymphs who were out with Persephone while she was picking flowers. When she was kidnapped by Hades the hymphs did nothing and told no one. Demeter punished them by turning them into harpies. however it is argued she might have turned them into sirens or furies. Another says the harpies were the sisters of iris and daughters of Thaumas and Electra
Iris helped the gods, especially Zeus and Hera. She also helped her sisters the Harpies by asking the Argonauts to not kill them if the Harpies would never again bother Phineus.
Apollonius of Rhodes wrote a poem about Jason and the Argonauts. In this poem, Iris promised that the harpies who were her sisters would not bother Phineas if the argonauts would not kill the harpies.
You can get a good deck of harpie ladys and the harpie lady sisters card as well as their support cards in the "LORD OF THE STORM" structure deck.
The cast of Destroy All Sisters - 2014 includes: Juli Couture as Jamie Amanda Lea Allan as Angela
Iris was sister to Arke, Aello, Celaeno and Ocypete. Arke was her twin sister and was a messenger for the Titans. Aello, Ocypete and Celaneno were harpies who would abduct people and take them to Tartarus.
The three terrible sisters of ancient Greece are the Fates, also known as the Moirai. They are responsible for controlling human destiny and determining the length of a person's life. The three sisters are Clotho, who spins the thread of life, Lachesis, who measures the thread, and Atropos, who cuts the thread, signaling the end of life.
Aleera, Verona, and Marishka were Dracula's Brides when Van Helsing was Hunting him. They Were also Very close Friends, almost sisters, with Morgana Le Fay.
The answer to your question is that sisters, sisters and sisters are all the same word and it is a silly question.
When Meleager died his sisters the Meleagrides (except for Gorge and Deianira) wept so much that the gods turned them into guinea hens/fowls. Meleager had been a hunter and Artemis was goddess of hunting.
The people who sang sisters were sisters, called Sis and Ters.