Blood Mage Duelist

Menace
Whenever you cast an Instant or Sorcery spell you may pay 1 life. If you do, create a Blood token.

Whenever Blood Mage Duelist attacks you may sacrifice a blood token. If you do, put a +1/+1 counter on Blood Mage Duelist, then you may cast
an Instant or Sorcery spell from a graveyard with mana value less than or equal to Blood Mage Duelists power without paying its mana cost.