Faeburrow Elder

Vigilance
Faeburrow Elder gets +1/+1 for each color among permanents you control.
{T}: For each color among permanents you control, add one mana of that color.

Avacyn's Pilgrim

Whitemane Lion

Flash
When Whitemane Lion enters, return a creature you control to its owner's hand.

Priest of Titania

{T}: Add {G} for each Elf on the battlefield.

Dream Stalker

When Dream Stalker enters, return a permanent you control to its owner's hand.

Paradise Druid

This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.)
{T}: Add one mana of any color.

Taunting Elf

All creatures able to block Taunting Elf do so.

Coiling Oracle

When Coiling Oracle enters, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

Arbor Elf

Fyndhorn Elves

Clement, the Worrywort

Vigilance
Whenever Clement, the Worrywort or another creature you control enters, return up to one target creature you control with lesser mana value to its owner's hand.
Frogs you control have "{T}: Add {G} or {U}. Spend this mana only to cast a creature spell."

Elvish Mystic

Mana Breach

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

Lotus Cobra

Landfall — Whenever a land you control enters, add one mana of any color.

Chulane, Teller of Tales

Vigilance
Whenever you cast a creature spell, draw a card, then you may put a land card from your hand onto the battlefield.
{3}, {T}: Return target creature you control to its owner's hand.

Deafening Silence

Each player can't cast more than one noncreature spell each turn.

Shrieking Drake

Flying
When Shrieking Drake enters, return a creature you control to its owner's hand.