Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Flying, trample
Whenever this creature mutates, exile cards from the top of your library until you exile a nonland permanent card. Put that card onto the battlefield or into your hand.

Lluwen enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)
Exile a creature card from your graveyard: Lluwen becomes prepared. Activate only as a sorcery.

Mill three cards, then you may return a creature card from your graveyard to your hand. (To mill three cards, put the top three cards of your library into your graveyard.)

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add or .

Enchant creature
Enchanted creature gets -2/-2.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Enchant creature
When this Aura enters, draw a card.
Enchanted creature gets +2/+2 and has flying.

This land enters tapped.
When this land enters, you gain 1 life.
: Add or .

, : Tap target creature with mana value 2 or greater.

You may look at the top card of your library any time.
You may cast Dragon spells from the top of your library.

Sarkhan's Catharsis deals 5 damage to target player or planeswalker.

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.)
Sacrifice an artifact: Put a +1/+1 counter on target creature.

This land enters tapped.
: Add or .

, : Target creature with power X or less can't be blocked this turn.

Draw four cards, then discard three cards at random.

When this creature enters, creatures without flying can't block this turn.

Choose one —
• Take the Elevator — Create three 1/1 colorless Hero creature tokens.
• Take 59 Flights of Stairs — Tap up to three target creatures. Put a stun counter on one of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)

When this enchantment enters, create a Lander token. (It's an artifact with ", , Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")
Each creature you control enters with an additional +1/+1 counter on it for each land that entered the battlefield under your control this turn.

When this Siege enters, exile cards from the top of your library until you exile two nonland cards with mana value 4 or less. You may cast one of those two cards without paying its mana cost. Put one of them into your hand. Then put the other cards exiled this way on the bottom of your library in a random order.