Glissa Sunslayer

First strike, deathtouch
Whenever Glissa Sunslayer deals combat damage to a player, choose one —
• You draw a card and you lose 1 life.
• Destroy target enchantment.
• Remove up to three counters from target permanent.

Boseiju, Who Endures

{T}: Add {G}.
Channel — {1}{G}, Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

Immaculate Magistrate

{T}: Put a +1/+1 counter on target creature for each Elf you control.

Forest

Elvish Archdruid

Other Elf creatures you control get +1/+1.
{T}: Add {G} for each Elf you control.

Llanowar Elves

Cabal Coffers

{2}, {T}: Add {B} for each Swamp you control.

Overgrown Tomb

({T}: Add {B} or {G}.)
As Overgrown Tomb enters, you may pay 2 life. If you don't, it enters tapped.

Bayou

Gaea's Cradle

{T}: Add {G} for each creature you control.

Lys Alana Huntmaster

Whenever you cast an Elf spell, you may create a 1/1 green Elf Warrior creature token.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Eyeblight's Ending

Elvish Spirit Guide

Exile Elvish Spirit Guide from your hand: Add {G}.

Verdant Catacombs

{T}, Pay 1 life, Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

Elvish Promenade

Create a 1/1 green Elf Warrior creature token for each Elf you control.

Beast Whisperer

Whenever you cast a creature spell, draw a card.

Essence Warden

Whenever another creature enters, you gain 1 life.

Swamp

Worldly Tutor

Search your library for a creature card, reveal it, then shuffle and put the card on top.

Joraga Warcaller

Multikicker {1}{G} (You may pay an additional {1}{G} any number of times as you cast this spell.)
Joraga Warcaller enters with a +1/+1 counter on it for each time it was kicked.
Other Elf creatures you control get +1/+1 for each +1/+1 counter on Joraga Warcaller.