Spirit Of Lost Memories

Haste, vigilance, soul strike (Whenever you gain
life for the first time each turn, Spirit Of Lost
Memories deals that much damage to any target.)
{r}{r}{w}{w}: Put Spirit Of Lost Memories onto the
battlefield from your hand. Then, you may have
each player shuffle all cards in their graveyard
and in exile into their owner's libraries. If you
do, you gain life equal to the number of cards
shuffled into their owner's libraries this way.