Flying
If a source you control would deal damage to an opponent or a permanent an opponent controls, it deals double that damage instead.

Deathtouch
When this creature enters, the Ring tempts you.
Whenever the Ring tempts you, put a +1/+1 counter on each Wraith you control.
A deck can have up to nine cards named Nazgûl.

You may exile a blue card from your hand rather than pay this spell's mana cost.
Return target creature to its owner's hand.

Add .

Destroy all creatures. They can't be regenerated.

Whenever a creature enters, you lose 1 life and add .

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.)
When this creature enters, create four 1/1 green Squirrel creature tokens.
Squirrel creatures get +1/+1.

+4: Target player exiles a card from their hand.
−3: Exile target permanent.
−14: Restart the game, leaving in exile all non-Aura permanent cards exiled with Karn. Then put those cards onto the battlefield under your control.

, Sacrifice this artifact: Add one mana of any color.

Creatures you control with power 2 or less can't be blocked by creatures with power 3 or greater.
If a triggered ability of a creature you control with power 2 or less triggers, that ability triggers an additional time.

Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell's mana value.

Flying
When Aerid Konstrari enters or dies, create a Heartwood token. (It's a red and green artifact with ": Add or .")
: Create a Heartwood token. Then Aerid Konstrari gets +X/+0 until end of turn, where X is the number of artifacts you control.

You may have Sakashima the Impostor enter as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has ": Return Sakashima the Impostor to its owner's hand at the beginning of the next end step."

Haste
: Create a token that's a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

+1: Return up to one target land card from your graveyard to your hand.
−1: Wrenn and Six deals 1 damage to any target.
−7: You get an emblem with "Instant and sorcery cards in your graveyard have retrace." (You may cast instant and sorcery cards from your graveyard by discarding a land card in addition to paying their other costs.)

: Add .
, Sacrifice this land: Destroy target land.

(: Add or .)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

You may return three Islands you control to their owner's hand rather than pay this spell's mana cost.
Counter target spell.

Enchant land
At the beginning of the upkeep of enchanted land's controller, this Aura deals 1 damage to that player.

Enchant Wall
Enchanted Wall can attack as though it didn't have defender.