Goblin Slayer

Vigilance, First Strike, Reach
When Goblin Slayer enters the battlefield all
goblins get -1/-1, all creatures under your control
get +1/+1
{t}{r/g}, Target creature cant block this turn
{t}{3}{w}, Target player takes 3 damage
When Goblin Slayer toughness reaches 0 it turns
into Goblins Nightmare