Sanbene, Fallen Grace

If your commander is in the command zone on your upkeep, pay 1 life for each time they have been returned to the command zone.
Pay 2 life: Add {b}.
If you did not generate mana with Sanbene, Fallen Grace you may pay {x} and X life, if you
do search your library for a card with converted mana cost equal to X, put it in your hand then shuffle your library.