Mammoth, The Hive Mind

Mutate {1}{b}{u/r}{u/r}
Flying, Deathtouch, Lifelink
Whenever Mammoth mutates, put a maggot
counter on target creature you don't control.
When creatures with maggot counter dies, return
them under your control. Insect types are added
to them.
Mammoth gets +1/+1 for each other insect you
control.