Rakdos Goremaster

Whenever another creature dies, put a +1/+1 counter on Rakdos Goremaster
As long as Rakdos Goremaster has 3 or more +1/+1 counters on it, it has deathtouch
As long as Rakdos Goremaster has 5 or more +1/+1 counters on it, it has trample
As long as Rakdos Goremaster has 7 or more +1/+! counters on it, it has double strike