Lorespire Archive

Artifacts you control are Clues in addition to
their other types and have "{2}, Sacrifice this
artifact: Draw a card."
Whenever you sacrifice a Clue, put a research
counter on Lorespire Archive.
{u}{r}, Sacrifice Lorespire Archive: You may cast
a spell from your hand with mana value X or less
without paying its mana cost, where X is the
number of research counters on this.