At the beginning of your upkeep, if there are three or more creature cards in your graveyard, put a +1/+1 counter on this creature.

Hideaway 5 (When this enchantment enters, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.)

At the beginning of your upkeep, you may mill three cards. Then if there are twenty or more cards in your graveyard, you may play the exiled card without paying its mana cost.

At the beginning of your upkeep, if there are four or more creature cards in your graveyard, return a creature card at random from your graveyard to your hand.

Choose a Background (You can have a Background as a second commander.)

At the beginning of your upkeep, if this card is the only creature card in your graveyard, you may return this card to the battlefield.

Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

At the beginning of your upkeep, if you control ten or more Treasures, you win the game.

At the beginning of your upkeep, target opponent discards a card if you control the creature with the greatest power or tied for the greatest power.

Flying, trample

When this creature enters, mill four cards.

Delirium — At the beginning of your upkeep, you lose 4 life unless there are four or more card types among cards in your graveyard.

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.)

Reach

At the beginning of your upkeep, mill two cards. (Put the top two cards of your library into your graveyard.)

, Exile this creature: Return target card from your graveyard to your hand.

At the beginning of your upkeep, this creature deals 1 damage to you.

Amplify 1 (As this creature enters, put a +1/+1 counter on it for each Zombie card you reveal in your hand.)

At the beginning of your upkeep, if this card is in your graveyard, you may pay . If you do, return it to your hand.

Enchant player

At the beginning of enchanted player's upkeep, that player exiles two cards from their graveyard.

Flying

When this creature enters, destroy target non-Demon creature.

At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature.

At the beginning of your upkeep, put a -1/-1 counter on each creature.

When this enchantment enters, you draw four cards and you lose 4 life.

At the beginning of your upkeep, if you control four or more Demons with different names, you win the game.

At the beginning of your upkeep, exile a card from your graveyard.

Threshold — As long as there are seven or more cards in your graveyard, this enchantment has "Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay . If you do, return that card to your hand."

At the beginning of your upkeep, each opponent mills five cards. Then exile each opponent's graveyard.

At the beginning of your upkeep, target opponent may exile a card from their graveyard. If that player doesn't, you may draw a card.