This land enters tapped.
Whenever a Mountain you control enters, if you control at least five other Mountains, you may have this land deal 3 damage to any target.
: Add .

Suspend 3—
Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.

(: Add .)

Destroy target creature if it has mana value 2 or less.
Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent left the battlefield under your control this turn.

Lightning Bolt deals 3 damage to any target.

Add .

Whenever Ragavan deals combat damage to a player, create a Treasure token and exile the top card of that player's library. Until end of turn, you may cast that card.
Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with ", Sacrifice this token: Add one mana of any color.")

, Tap an untapped creature you control: Add one mana of any color.

Draw three cards, then put two cards from your hand on top of your library in any order.

This creature gets -X/-X, where X is your life total.

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Unholy Heat deals 2 damage to target creature or planeswalker.
Delirium — Unholy Heat deals 6 damage instead if there are four or more card types among cards in your graveyard.

Exile target creature. Its controller gains life equal to its power.

Haste
Whenever this creature attacks, defending player reveals the top card of their library. If it's a land card, that player puts it into their hand.

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Counter target noncreature 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.")
Whenever another creature you control enters, you gain 1 life.

+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.)

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Target player sacrifices a creature of their choice.

You may play an additional land this turn.
Draw a card.

, , Discard a creature card: Search your library for a creature card, reveal it, put it into your hand, then shuffle.

Whenever you cast a spell that's white, blue, black, or red, put a +1/+1 counter on this creature.

Look at the top three cards of your library. Put one of them into your hand, put one of them on the bottom of your library, and exile one of them. You may play the exiled card this turn.

This creature gets +1/+1 for each other creature on the battlefield named Relentless Rats.
A deck can have any number of cards named Relentless Rats.

When this creature enters, discard two cards, then draw two cards. For each nonland card discarded this way, create a 1/1 red Elemental creature token.
, Exile this card from your graveyard: Create two 1/1 red Elemental creature tokens.

If it's not your turn, you may exile a black card from your hand rather than pay this spell's mana cost.
Destroy all creatures that entered this turn.

Whenever a player sacrifices a permanent, this creature deals 1 damage to any target.

As an additional cost to cast this spell, sacrifice a creature.
Search your library for a creature card with mana value X or less, where X is 2 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Exile Eldritch Evolution.

This spell can't be countered.
Destroy all creatures.

+1: Untap two target lands.
−1: Create a 3/3 green Beast creature token.
−4: Creatures you control get +3/+3 and gain trample until end of turn.

Flying, deathtouch
When Dragonlord Silumgar enters, gain control of target creature or planeswalker for as long as you control Dragonlord Silumgar.

Whenever you cast a spell that [CHOICE A], create a green Elemental creature token named Maro with "This creature's power and toughness are each equal to the number of [CHOICE B]."
— As you create your deck, choose an [A] and a [B] —
• [A1] "is an Elemental" | [A2] "has a watermark or landscape orientation" | [A3] "targets a creature you control"
• [B1] "cards in your hand" | [B2] "card types among cards in your graveyard" | [B3] "artists among nonland, nontoken permanents you control"

+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.

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Flying
This creature enters with a +1/+1 counter on it for each instant and sorcery card exiled with it.
Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on this creature.

Take an extra turn after this one.
If Nexus of Fate would be put into a graveyard from anywhere, reveal Nexus of Fate and shuffle it into its owner's library instead.