Keyword: Mentor

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
At the beginning of combat on your turn, create a 1/1 red Goblin creature token. That token gains haste until end of turn and attacks this combat if able.

Haste
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
: Goblin Banneret gets +2/+0 until end of turn.