Rosie, Queen of Thorns

When Rosie, Queen of Thorns enters the battlefield, create a 0/3 Green Wall of
Thorns Token with Reach and Defender.
Then Populate
{g}{g}{g} Create a 0/3 Green Wall of
Thorns Token with Reach and Defender.
When a Token enters the battlefield under your control, put a 1/1 counter on target creature you control