Hello Neighbour

Whenever Hello Neighbour dies, return
Hello Neighbour To the battlefield
and leveled up by 1. (start at level 1)
when Hello Neighbour dies at level 4,
exile Hello Neighbour.
Level 1: 3/3.
Level 2: 3/3 reach
Level 3: 3/4 first strike
Level 4: 4/4 trample