All creatures have vigilance.
At the beginning of each player's end step, tap all untapped creatures that player controls that didn't attack this turn. This artifact deals damage to the player equal to the number of creatures tapped this way.

Essence Extraction deals 3 damage to target creature and you gain 3 life.

Buyback—Discard two cards. (You may discard two cards in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)
Counter target spell.

Surge (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)
Tap target creature. It doesn't untap during its controller's next untap step.
Draw a card.

Enchant player
Whenever a creature attacks enchanted player, put a +1/+1 counter on it.

Destroy two target nonblack creatures. You lose 5 life.

Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, choose one —
• Untap target permanent you control.
• Tap target permanent an opponent controls.

Flying
Pay 1 life: Regenerate this creature.

Changeling (This card is every creature type.)
As this creature enters, choose a creature type.
Whenever another creature you control of the chosen type enters, put a +1/+1 counter on this creature.

Vampires' Vengeance deals 2 damage to each non-Vampire creature. Create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever you activate an ability of a Sarkhan planeswalker, this creature deals 1 damage to any target.

When this creature enters, sacrifice a creature.
: Regenerate this creature.

When this creature enters, it deals 2 damage to target creature.

Sacrifice a creature. Rupture deals damage equal to that creature's power to each creature without flying and each player.

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

Flame Spill deals 4 damage to target creature. Excess damage is dealt to that creature's controller instead.

Each attacking creature gets +1/+0 until end of turn for each nonbasic land defending player controls.

Each player can't cast more than one spell each turn.

Lightning Storm deals X damage to any target, where X is 3 plus the number of charge counters on Lightning Storm.
Discard a land card: Put two charge counters on Lightning Storm. You may choose a new target for it. Any player may activate this ability but only if Lightning Storm is on the stack.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Trample
Whenever Cadira deals combat damage to a player, for each token you control, create a 1/1 white Rabbit creature token.

When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield.

Flying
Whenever this creature deals combat damage to a player, that player discards a card.
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Artifact spells you cast cost less to cast.

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip

Landfall — Whenever a land you control enters, create a colorless Equipment artifact token named Rock with "Equipped creature has ', , Sacrifice Rock: This creature deals 2 damage to any target'" and equip .
Partner (You can have two commanders if both have partner.)

Counter target spell unless its controller pays .

When this creature enters, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
, Sacrifice another creature or a Treasure: Draw a card.

Whenever another creature you control with power 2 or less enters, you may pay . If you do, draw a card.

Whenever a nontoken creature you control dies, you gain 1 life. Then you may draw a card. If you do, discard a card.
, , Sacrifice this artifact: Search your graveyard, hand, and/or library for a card named God-Pharaoh's Gift and put it onto the battlefield. If you search your library this way, shuffle. Activate only if there are six or more creature cards in your graveyard.

Changeling (This card is every creature type.)
Flash
Flying
When this creature enters, return up to one other target creature you control to its owner's hand.

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

At the beginning of combat on your turn, you may discard a card. If you do, choose a creature. Whenever that creature deals combat damage to a player this turn, you draw two cards.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

Flash (You may cast this spell any time you could cast an instant.)
Flying
Exploit (When this creature enters, you may sacrifice a creature.)
When this creature exploits a creature, counter target creature spell.