Masonetta, Bloodwitch

Ward- Pay 3 life.
Whenever a player pays life or if a player lost 5 or
more life last turn, create a blood token.
Blood tokens you control have "{t}, Sacrifice this
artifact: Add {b} or {r} to your mana pool."
Sacrifice 7 Blood tokens: Search your library for
a card and put it into your hand, then shuffle your
library.