Anything with this ability activates their effect after the given turn time has come to pass. This does not count the turn it was placed. So if G Follower 1 was placed on turn 2 for example, it would draw a card at the start of turn 4.
Not recommended to be placed alone against Justice as Justice's passive effect kills it instantly. G Follower 1 is particularly useful in Bravery, Kindness and Perseverance decks because of its low cost and card draw ability.