C Common Libromancer Intervention X TRAP When your opponent activates a card or effect: Target 1 "Libromancer" Ritual Monster you control
(1) If a Salamangreat monster is sent to your GY, except Salamangreat Gazelle: You can Special Summon this card from your hand
The ETB ability is incredibly strong card advantage, but don't overestimate it too much
return that target to the Deck and destroy all cards on the field." It vs That Target When a Chain resolves, cards that were targeted by Effects may become invalid targets for that Effect
After that, we get a cost reduction of for Clerics, Rogues, Warriors, and Wizards, which are, of course, the four creature types in the party batch
You won't find a binder large enough to house all 1,025 critters in this range, but it is the most secure I've used so far (sorry, Ultra Pro)