: Add .
, : Add , , or .

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

Each creature assigns combat damage equal to its toughness rather than its power.

Soulless One's power and toughness are each equal to the number of Zombies on the battlefield plus the number of Zombie cards in all graveyards.

This spell can't be countered.
You have no maximum hand size.
Whenever an opponent casts a noncreature spell, draw a card.
Discard three cards: Exile Nezahal. Return it to the battlefield tapped under its owner's control at the beginning of the next end step.

Regenerate each creature you control.

Equipped creature gets +2/+2 and has protection from green and from blue.
Whenever equipped creature deals combat damage to a player, you create a 2/2 green Wolf creature token and that player mills ten cards.
Equip

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Trample
When this creature enters, destroy target noncreature permanent.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

All permanents are colorless.

Flying
White spells and black spells you cast cost less to cast.

Destroy all non-Rat creatures. They can't be regenerated, of course. Then each player amasses Rats X, where X is the number of Rats they control.

Rivendell enters tapped unless you control a legendary creature.
: Add .
, : Scry 2. Activate only if you control a legendary creature.

Creatures you control gain indestructible. Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

Ward—Discard an enchantment, instant, or sorcery card.
Whenever you cast your second spell each turn, each opponent mills two cards. When one or more cards are milled this way, exile target enchantment, instant, or sorcery card with equal or lesser mana value than that spell from an opponent's graveyard. Copy the exiled card. You may cast the copy without paying its mana cost.

Knight creatures you control have double strike.

Whenever another permanent you control becomes the target of a spell or ability an opponent controls, you may return that permanent to its owner's hand.

Start your engines!
: Add .
Max Speed — , : Mill seven cards. Choose a playtest card from among them. You may cast it without paying its mana cost. If Team Cloudspire won the race, copy it and you may choose new targets for the copy. If Team Speed Demons won the race, each opponent loses life equal to its mana value.
The Mystery Raceway can be your commander.

When Terra enters, mill five cards. Put up to one enchantment card milled this way into your hand.
Trance — , : Exile Terra, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery.

, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.