Forest

Wirewood Savage

Whenever a Beast enters, you may draw a card.

Mountain

Writhing Chrysalis

Devoid (This card has no color.)
When you cast this spell, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this token: Add {C}."
Reach
Whenever you sacrifice another Eldrazi, put a +1/+1 counter on this creature.

Arboreal Grazer

Reach
When this creature enters, you may put a land card from your hand onto the battlefield tapped.

Cleansing Wildfire

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
Draw a card.

Converter Beast

When this creature enters, incubate 5. (Create an Incubator token with five +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)

Shadowbeast Sighting

Create a 4/4 green Beast creature token.
Flashback {6}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Darksteel Citadel

Warbeast of Gorgoroth

Whenever this creature or another creature you control with power 4 or greater dies, amass Orcs 2. (Put two +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

Primal Huntbeast

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Slagwoods Bridge

This land enters tapped.
Indestructible
{T}: Add {R} or {G}.

Snapping Gnarlid

Landfall — Whenever a land you control enters, this creature gets +1/+1 until end of turn.