At the beginning of combat on your turn, mill a card. When you do, if there are four or more creature cards in your graveyard, put a +1/+1 counter on target creature you control and it gains deathtouch until end of turn. (To mill a card, put the top card of your library into your graveyard.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When this creature enters, destroy target artifact, enchantment, or land.

Destroy target artifact or land. Creatures without flying can't block this turn.

Trample
Wilderness Elemental's power is equal to the number of nonbasic lands your opponents control.

Enchant land
Enchanted land is a 6/4 green Elemental creature. It's still a land.
When enchanted land dies, return that card to its owner's hand.

Whenever this creature or another Zombie you control dies, you draw a card and you lose 1 life.

(: Add or .)
This land enters tapped unless you control two or more basic lands.

Choose one or both —
• Deafening Clarion deals 3 damage to each creature.
• Creatures you control gain lifelink until end of turn.

Each opponent draws a card, then you draw a card for each opponent who drew a card this way.

Flying
Whenever one or more cards leave your graveyard during your turn, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
Renew — , Exile this card from your graveyard: Put two +1/+1 counters and a flying counter on target creature. Activate only as a sorcery.

Thopters you control have haste.
Whenever you play a land from exile or cast a spell from exile, create a 1/1 colorless Thopter artifact creature token with flying.

Equipped creature gets +3/+1 and must be blocked by an Eldrazi if able.
Equip

Whenever a Human you control dies, draw a card.
Whenever a creature you control with a +1/+1 counter on it dies, you gain 2 life.

Destroy target creature and up to X other target creatures, where X is the number of Attractions you've visited this turn.

When this creature dies, it deals 1 damage to any target.
: This creature gets +2/+0 until end of turn.

: Add .
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Flying
Whenever you cast an instant or sorcery spell, this creature gets +2/+0 until end of turn.

Flying
When this creature enters, you take the initiative.

: Look at the top X cards of your library, where X is the number of tokens you created this turn. Put one of those cards into your hand and the rest on the bottom of your library in a random order.
Choose a Background (You can have a Background as a second commander.)

Whenever you gain life, put that many ribbon counters on this creature. Then if there are three or more ribbon counters on this creature, remove those counters and untap it.
: Add one mana of any color.