Biomod

Choose one Creature and add one +4/+4 Marker on it.
{6}{b} The Creature Gains Deathtouch
{3}{b}The Creature gets one +2/+2
Marker this is only one time possible
{10}{b}The Creature gets, if the creature
damages a player the Player loses instantly.
Every Effect can be cancelled by paying
3 Mana and sacrificing one Creature
Well we tried