Scythong, C'thulu's Chosen

Creature cards you own that are not on the battlefield have Implant, their Implant cost is
equal to their mana cost reduced by {2}(You may discard that card for its Implant cost, When you cast
your next creature spell this turn, add that cards's
effect to that creature as it enters the battlefield)
Menace, Bloodletting (Whenever this deals damage
to a creature, that creatures controller losses that much
life)