Arknight Viserai

: Whenever an opponent casts a spell, you may create a Blood token unless that player discards a card or sacrifices a non-land permanent.
+1: Search your library for a non-creature card, reveal it, then shuffle and put the card on top. You lose 2 life.
-6: Until end of turn, tokens you control gain "Sacrifice this card: Target player loses 3 life & you gain 3 life.