Lonely Sorceress

Whenever a card is put into your graveayrd from anywhere, Lonely Sorceress gets +1/+1 until end of turn.
At the beginning of each endstep, if Lonely
Sorceress has power 6 or greater, sacrifice it and create a number of 1/1 black Raven creature tokens with flying equal to its power.
{3}{b}: Put the top card of your library into your graveyard