Seath The Scaleless

: When Seath The Scaleless enters the battlefield, create a Blue 0/1 Crystal artifact token with "Prevent all damage dealt to Seath The Scaleless"
+2: Target a creature you control. You may sacrifice that creature and if you do, create a 4/4 Blue Channeler token with "Tap: Scry 2"
-6: Until end of turn, whenever you cast a Sorcery or Instant spell, Seath The Scaleless deals 3 damage to any target.