(Gain the next level as a sorcery to add its ability.)

When this Class enters, create a 0/4 white Wall creature token with defender.

{W}: Level 2

Whenever one or more noncreature, nonland permanents you control enter, put a +1/+1 counter on target creature you control.

{4}{W}: Level 3

When this Class becomes level 3, return target noncreature, nonland permanent card from your graveyard to the battlefield.