If your deck is capable of summoning Rank 4 Xyz monsters, add to your deck a copy of Number 22: Heraldry Patriarch. It can easily cripple them, because you not only get to nuke all but one Harpie, it prevents them from summoning the original one via Elegant Egotist.
I was having a perfect Lunalight deck, now I don't know if investing or not in tenki (I have only 1 at the moment) since I think it will be limited in the future...
heraldry patriarch? lol.that fag sh it chain a trap and its gone.2.2k so it cannot do sh i t against 2.6 k at best you destroy 2 max and next turn th a t piece of s hit loops and summons 26 more.cos it easily removes it with quicplay sh i ts or backrow.