Zubi

It answers decks that use their discard pile. Homura plays an entity costing 2 or less back from it, The Sisters and Surge Gate play weapons from it, and Staff of Heavenly Thunder with a Cloudreader leader gets +1 attack per weapon in it, so taking 2 weapons is up to -2 on a Staff (it caps at +4). Take the card they plan to use next.

The cards go to the bottom of their deck, so they come back only if the game runs long. Against a deck that ignores its discard pile, Zubi is a plain 1/2.

It is Neutral, so any deck can play it.

From the full set, more cards use the discard pile: Open Armory, Yamada, The Unresting, Master Kuroda, Gurugumi Mask, Weapon Toss and Relentless Mercenary. Zubi takes the two that matter most.