Ben the Presumptuous

Soulbond A
For each {b} in mana costs of spells you cast,
you may pay 2 life. If you do, draw that many
cards and it costs that much less mana of any
other color.
At the end of your end step, target opponent
faces a choice: You draw a card for every 2 life
you lost this turn, or they lose 1 life for every 2
cards in your hand.