Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and can't block.

Flying

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and has "When this creature becomes the target of a spell or ability, sacrifice it."

Discard a card: This creature gains flying until end of turn.

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and can't block.

Discard a card: This creature gains lifelink until end of turn.

Threshold — This creature gets +1/+2 as long as there are seven or more cards in your graveyard.

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and has "When this creature dies, you lose 4 life."

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."

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

This creature enters with three -1/-1 counters on it.

At the beginning of your end step, if there is an Elf card in your graveyard and this creature has a -1/-1 counter on it, remove a -1/-1 counter from this creature.

Flying

Whenever this creature enters or attacks, draw a card, then discard a card.

Threshold — This creature gets +1/+1 and has deathtouch as long as there are seven or more cards in your graveyard.

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.)

As long as there are four or more creature cards in your graveyard, this creature has menace and deathtouch.

Flying

At the beginning of your end step, you may exile an enchantment card from your graveyard. If you do, create a 2/2 black Zombie creature token.

Threshold — , , Exile two cards from your graveyard: Target player discards a card. Activate only as a sorcery and only if there are seven or more cards in your graveyard.

Descend 4 — As long as there are four or more permanent cards in your graveyard, this creature gets +1/+1 and has lifelink.

Haste

At the beginning of your upkeep, if this card is in your graveyard with three or more creature cards above it, you may put this card onto the battlefield.

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

Flying

As long as there are five or more mana values among cards in your graveyard, this creature gets +2/+2 and has deathtouch.

When this creature dies, mill two cards, then draw a card.