Mountain Yeti

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
Protection from white

Great Defender

Target creature gets +0/+X until end of turn, where X is its mana value.

Primordial Ooze

This creature attacks each combat if able.
At the beginning of your upkeep, put a +1/+1 counter on this creature. Then you may pay {X}, where X is the number of +1/+1 counters on it. If you don't, tap this creature and it deals X damage to you.

Pyrotechnics

Pyrotechnics deals 4 damage divided as you choose among any number of targets.

Quarum Trench Gnomes

{T}: If target Plains is tapped for mana, it produces colorless mana instead of white mana. (This effect lasts indefinitely.)

Raging Bull

Spinal Villain

Storm World

At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is 4 minus the number of cards in their hand.

The Brute

Enchant creature
Enchanted creature gets +1/+0.
{R}{R}{R}: Regenerate enchanted creature.

Wall of Dust

Defender (This creature can't attack.)
Whenever this creature blocks a creature, that creature can't attack during its controller's next turn.

Wall of Earth

Great Wall

Creatures with plainswalk can be blocked as though they didn't have plainswalk.

Wall of Heat

Wall of Opposition

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

Winds of Change

Each player shuffles the cards from their hand into their library, then draws that many cards.

Aisling Leprechaun

Whenever this creature blocks or becomes blocked by a creature, that creature becomes green. (This effect lasts indefinitely.)

Legends