Kunibert, Lone Spooktroopler

Plasma Collector - Whenever a Spirit an opponent controls dies, create a tapped Treasure and investigate. This ability triggers only once each turn.

{u}{r}{g}, Sacrifice three Clues: Exile cards from the top of your library until you exile a legendary creature and an Equipment, each with mana value
3 or less. You may cast them without paying their mana cost. Put the rest on the bottom of your library in a random order.