Slaughterspine

Level: 1
{1} Add +1 to Slaughterspine's level.
At level 3, Slaughterspine gets +3/+3.
At level 6, Slaughterspine gets +2/+2, in addition to the level 3 bonus.
At level 8, Slaughterspine gains either Deathtouch or Trample. Slaughterspine's owner chooses.