Forest

Foundry Champion

When Foundry Champion enters, it deals damage to any target equal to the number of creatures you control.
{R}: Foundry Champion gets +1/+0 until end of turn.
{W}: Foundry Champion gets +0/+1 until end of turn.

Armada Wurm

Trample
When Armada Wurm enters, create a 5/5 green Wurm creature token with trample.

Viashino Shanktail

First strike
Bloodrush — {2}{R}, Discard Viashino Shanktail: Target attacking creature gets +3/+1 and gains first strike until end of turn.

Healer of the Pride

Whenever another creature you control enters, you gain 2 life.

Gruul Keyrune

{T}: Add {R} or {G}.
{R}{G}: Gruul Keyrune becomes a 3/2 red and green Beast artifact creature with trample until end of turn.

Electrickery

Electrickery deals 1 damage to target creature you don't control.
Overload {1}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Pit Fight

Target creature you control fights another target creature. (Each deals damage equal to its power to the other.)

Phyrexian Hulk

Thragtusk

When Thragtusk enters, you gain 5 life.
When Thragtusk leaves the battlefield, create a 3/3 green Beast creature token.

Plains

Flinthoof Boar

Flinthoof Boar gets +1/+1 as long as you control a Mountain.
{R}: Flinthoof Boar gains haste until end of turn. (It can attack and {T} this turn.)

Ring of Valkas

Equipped creature has haste. (It can attack and {T} no matter when it came under your control.)
At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's red.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Wall of Fire

Defender (This creature can't attack.)
{R}: Wall of Fire gets +1/+0 until end of turn.

Trading Post

{1}, {T}, Discard a card: You gain 4 life.
{1}, {T}, Pay 1 life: Create a 0/1 white Goat creature token.
{1}, {T}, Sacrifice a creature: Return target artifact card from your graveyard to your hand.
{1}, {T}, Sacrifice an artifact: Draw a card.

Dragon Hatchling

Flying
{R}: Dragon Hatchling gets +1/+0 until end of turn.

Transguild Promenade

Transguild Promenade enters tapped.
When Transguild Promenade enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Brushstrider

Vigilance (Attacking doesn't cause this creature to tap.)

Gruul Guildgate

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

Zhur-Taa Swine

Bloodrush — {1}{R}{G}, Discard Zhur-Taa Swine: Target attacking creature gets +5/+4 until end of turn.

Aurelia's Fury

Aurelia's Fury deals X damage divided as you choose among any number of targets. Tap each creature dealt damage this way. Players dealt damage this way can't cast noncreature spells this turn.

Miming Slime

Create an X/X green Ooze creature token, where X is the greatest power among creatures you control.

Collective Blessing

Oblivion Ring

When Oblivion Ring enters, exile another target nonland permanent.
When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Safe Passage

Prevent all damage that would be dealt to you and creatures you control this turn.

Elvish Visionary

When Elvish Visionary enters, draw a card.

Mountain

Axebane Guardian

Defender
{T}: Add X mana in any combination of colors, where X is the number of creatures you control with defender.