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

When you unlock this door, create a 1/1 white Glimmer enchantment creature token.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Flash
Whenever Evelyn or another Vampire you control enters, exile the top card of each player's library with a collection counter on it.
Once each turn, you may play a card from exile with a collection counter on it if it was exiled by an ability you controlled, and you may spend mana as though it were mana of any color to cast it.

Flying
This creature gets -1/-1 for each card in your hand.
, Discard three cards: Return this card from your graveyard to the battlefield tapped.

Noncreature, non-Equipment artifacts you control are Equipment in addition to their other types and have "Equipped creature gets +1/+0" and equip .
Doctor's companion (You can have two commanders if the other is the Doctor.)

Squad (As an additional cost to cast this spell, you may pay any number of times. When this creature enters, create that many tokens that are copies of it.)
When this creature enters, destroy up to one target artifact.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Return target creature card from your graveyard to your hand.

Flying
When this creature enters, it deals 2 damage to any target and you gain 2 life. If a player is dealt damage this way, they discard a card.

Destroy target artifact or enchantment. You gain 3 life.

Target creature you control gets +0/+3 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Destroy target nonblack creature.

(: Add .)

Choose target land. Create three tokens that are copies of it, except they're 3/3 creatures in addition to their other types and they have vigilance and menace. (They're affected by summoning sickness.)

, Sacrifice a land: Destroy target land.

At the beginning of your upkeep, sacrifice this creature unless you pay .

Trample
This creature enters with four +1/+1 counters on it.
Whenever this creature attacks or blocks, remove a +1/+1 counter from it at end of combat.
: Put a +1/+1 counter on this creature.

Make Them Pay — Whenever a nontoken artifact creature you control dies, you may exile it. If you do, choose an opponent with the most life among your opponents. That player faces a villainous choice — They lose 4 life, or you create a token that's a copy of that card.

First strike
Cohort — , Tap an untapped Ally you control: This creature deals 1 damage to target opponent or planeswalker.

When this creature enters, it deals damage to target creature an opponent controls equal to the number of Goblins you control.