You may have this creature enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.

Reach (This creature can block creatures with flying.)
This creature can block an additional seven creatures each combat.

Vigilance
Adeline's power is equal to the number of creatures you control.
Whenever you attack, for each opponent, create a 1/1 white Human creature token that's tapped and attacking that player or a planeswalker they control.

Cast this spell only during the declare attackers step and only if you've been attacked this step.
Return one or two target attacking creatures to their owner's hand.

Indestructible
: Add .

Trample
Whenever this creature or another creature you control enters, this creature fights up to one target creature you don't control.

: Add one mana of any color. Spend this mana only to cast a creature spell.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Landfall — Whenever a land you control enters, put a +1/+1 counter on this creature. It gains flying until end of turn.

When this creature enters, target player mills four cards.

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)

If an opponent controls a Plains and you control a Swamp, you may cast this spell without paying its mana cost.
All creatures get -2/-2 until end of turn.

Kicker—Sacrifice two lands. (You may sacrifice two lands in addition to any other costs as you cast this spell.)
Target player discards two cards. If this spell was kicked, that player discards three cards instead.

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional .

Whenever this creature becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .
Whenever this creature enters or attacks, tap target permanent. It doesn't untap during its controller's next untap step.

, , Sacrifice this artifact: Return all enchantment cards from your graveyard to your hand.

Choose creature or land. Reveal the top four cards of your library. Put all cards of the chosen type revealed this way into your hand and the rest into your graveyard.

When this artifact enters, each player chooses a nonland permanent and puts a doom counter on it.
, , Sacrifice this artifact: Destroy each permanent with a doom counter on it.

Reach
Discard a card: This creature gets +1/+1 until end of turn.

When this creature enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")
, Sacrifice this creature: Target creature gets -X/-X until end of turn, where X is twice the number of Blood tokens you control. Activate only as a sorcery.

Equipped creature gets +2/+2 and has protection from black and from green.
Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control.
Equip

When this creature enters, target opponent loses 1 life for each Vampire you control.

Tokens you control have ": Add ."
Choose a Background (You can have a Background as a second commander.)

: Creatures you control get +1/+1 and gain vigilance until end of turn. Activate only during your turn. (Attacking doesn't cause them to tap.)

: The next time a land source of your choice would deal damage to you this turn, prevent that damage.
Cycling (, Discard this card: Draw a card.)

Flying
When this creature enters, you gain 3 life for each artifact you control.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Merfolk spells and Wizard spells you cast cost less to cast.

As long as this creature is attacking, it gets +2/+0.
Pay 4 life: This creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

(: Add .)

Whenever a creature you control attacks, you may put a quest counter on this enchantment.
As long as this enchantment has seven or more quest counters on it, creatures you control get +5/+5.

Creatures named Lightning Rager can't attack you or planeswalkers you control.
At the beginning of each player's upkeep, that player creates a 5/1 red Elemental creature token named Lightning Rager. It has trample, haste, and "At the beginning of the end step, sacrifice this token."

Haste
: Another target creature with power 2 or less can't be blocked this turn.
, , Discard your hand: Until end of turn, whenever a creature you control with power 2 or less deals combat damage to a player, draw a card.