Soul Warden

Whenever another creature enters the battlefield, you gain 1 life.

Faerie Seer

Flying
When Faerie Seer enters the battlefield, scry 2.

Soul's Attendant

Whenever another creature enters the battlefield, you may gain 1 life.

Cathedral Sanctifier

When Cathedral Sanctifier enters the battlefield, you gain 3 life.

Network Disruptor

Flying
When Network Disruptor enters the battlefield, tap target permanent.

Overwhelmed Apprentice

When Overwhelmed Apprentice enters the battlefield, each opponent mills two cards. Then you scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)