Svath, the Honored

At the beginning of each endstep, if you gained
more life than an opponent this turn,
draw a card.
At the end of combat on your turn, if you
control no other creatures, you may exile Svath.
If you do, add {w}{w}{w}{w}{w}{w} to your mana pool.
"Be at peace with the universe, and you will be
at peace with yourself."