Though most of their abilities can also be very effective on their own , such as Julieta Madrigal, who can not only heal your characters, but allows you to draw cards if you do use her ability to do that
Properly played, "Harpies" can overwhelm the opponent in moments with high attack power and powerful effects, but they are not strong individually, so they are vulnerable to opponents who can overpower them, or destroy all of them at once
Cards at 62% provided the greatest surprise to me
Perhaps his last moment of cultural relevance was back in the 90s, with TV series Goof Troop (and its accompanying SNES title, which was, somewhat improbably, the brainchild of Resident Evil creator Shinji Mikami!)
As for how valuable each ability is worth, weve talked a while ago about the approximate value mana cost that abilities add
We all know the power of cards like Slash the Ranks, but Phyrexian Scriptures offers lasting value