Soul Warden

Whenever another creature enters, you gain 1 life.

Soul's Attendant

Whenever another creature enters, you may gain 1 life.

Selesnya Signet

Riddleform

Whenever you cast a noncreature spell, you may have Riddleform become a 3/3 Sphinx creature with flying in addition to its other types until end of turn.
{2}{U}: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Humble

Until end of turn, target creature loses all abilities and has base power and toughness 0/1.

Cradle of Vitality

Whenever you gain life, you may pay {1}{W}. If you do, put a +1/+1 counter on target creature for each 1 life you gained.

Treva, the Renewer

Flying
Whenever Treva, the Renewer deals combat damage to a player, you may pay {2}{W}. If you do, choose a color, then you gain 1 life for each permanent of that color.

Prison Realm

When Prison Realm enters, exile target creature or planeswalker an opponent controls until Prison Realm leaves the battlefield.
When Prison Realm enters, scry 1.

Ajani's Pridemate

Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

Wake the Reflections

Populate. (Create a token that's a copy of a creature token you control.)

Anticipate

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Condemn

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Conclave Tribunal

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
When Conclave Tribunal enters, exile target nonland permanent an opponent controls until Conclave Tribunal leaves the battlefield.

Raise the Alarm

Create two 1/1 white Soldier creature tokens.

Shattered Angel

Flying
Whenever a land an opponent controls enters, you may gain 3 life.

Empyrean Eagle

Flying
Other creatures you control with flying get +1/+1.

Soul's Grace

You gain life equal to target creature's power.

Ajani's Welcome

Whenever a creature you control enters, you gain 1 life.

Winged Words

This spell costs {1} less to cast if you control a creature with flying.
Draw two cards.