Tireless Tracker

Landfall — Whenever a land you control enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
Whenever you sacrifice a Clue, put a +1/+1 counter on Tireless Tracker.

Fabled Passage

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

Elvish Visionary

When Elvish Visionary enters, draw a card.

Stampeding Wildebeests

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
At the beginning of your upkeep, return a green creature you control to its owner's hand.

Castle Garenbrig

Castle Garenbrig enters tapped unless you control a Forest.
{T}: Add {G}.
{2}{G}{G}, {T}: Add six {G}. Spend this mana only to cast creature spells or activate abilities of creatures.

Stampeding Serow

Trample
At the beginning of your upkeep, return a green creature you control to its owner's hand.

Nullmage Shepherd

Tap four untapped creatures you control: Destroy target artifact or enchantment.

Forest

Liquimetal Torque

{T}: Add {C}.
{T}: Target nonland permanent becomes an artifact in addition to its other types until end of turn.

Wall of Blossoms

Defender
When Wall of Blossoms enters, draw a card.

Arbor Elf

Liquimetal Coating

{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

Reclamation Sage

When this creature enters, you may destroy target artifact or enchantment.

Eternal Witness

When Eternal Witness enters, you may return target card from your graveyard to your hand.

Conjurer's Closet

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.