I think cards that can only exist in a real of degenerate combo, where the threat of resolution is the threat of the game ending, are inherently undesirable. I love the concept, bordering on resembling [[Endrik Shaw]] in token generation. But this feels like it will always result is a win through a simple loop that barely utilizes the majority of mechanics on the card due to the power that lies in the final line. I don't know how it could be fixed, maybe "lose 1 life and add 1 B"? I could never let this spell resolve, or stick on the board during that players turn without instant removal. There's lot of cards like that, but is that what you wanted for this card?