Deranged Hermit

Echo {3}{G}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Deranged Hermit enters, create four 1/1 green Squirrel creature tokens.
Squirrel creatures get +1/+1.

Forest

Dust Bowl

{T}: Add {C}.
{3}, {T}, Sacrifice a land: Destroy target nonbasic land.

Caller of the Claw

Flash
When Caller of the Claw enters, create a 2/2 green Bear creature token for each nontoken creature put into your graveyard from the battlefield this turn.

Masticore

At the beginning of your upkeep, sacrifice Masticore unless you discard a card.
{2}: Masticore deals 1 damage to target creature.
{2}: Regenerate Masticore.

Llanowar Elves

Mishra's Helix

Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.

Rofellos, Llanowar Emissary

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

Fyndhorn Elves

Rishadan Port

Uktabi Orangutan

When Uktabi Orangutan enters, destroy target artifact.

Elvish Scrapper

{G}, {T}, Sacrifice Elvish Scrapper: Destroy target artifact.

Tormod's Crypt

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Tranquil Grove

{1}{G}{G}: Destroy all other enchantments.

Triskelion

Triskelion enters with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.

Elvish Lyrist

{G}, {T}, Sacrifice Elvish Lyrist: Destroy target enchantment.

Priest of Titania

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

Skyshroud Poacher

{3}, {T}: Search your library for an Elf permanent card, put it onto the battlefield, then shuffle.

Naturalize

Gaea's Cradle

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

Plow Under

Put two target lands on top of their owners' libraries.

Choke

Islands don't untap during their controllers' untap steps.

Null Rod

Activated abilities of artifacts can't be activated.

Tangle Wire

Fading 4 (This artifact enters with four fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)
At the beginning of each player's upkeep, that player taps an untapped artifact, creature, or land they control for each fade counter on Tangle Wire.