Shalltear Bloodfallen

Deathtouch
During your end step, you have the choice of sacrificing a creature. If a creature is sacrificed this way, or any other way, Shalltear Bloodfallen gains one of these benefits, from left to right, until death:
Flying, First Strike, Vigilance, Shield, Hexproof
If additional cards are sacrificed after Shalltear Bloodfallen gains Hexproof, this card gains one +2/+0 token.