Creeping Tar Pit enters the battlefield tapped.
: Add or .
: Creeping Tar Pit becomes a 3/2 blue and black Elemental creature until end of turn and can't be blocked this turn. It's still a land.

Crypt of Agadeem enters the battlefield tapped.
: Add .
, : Add for each black creature card in your graveyard.

Converge — Crystalline Crawler enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.
Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color.
: Put a +1/+1 counter on Crystalline Crawler.

When Cyclops Electromancer enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard.

: Death-Hood Cobra gains reach until end of turn.
: Death-Hood Cobra gains deathtouch until end of turn.

Vigilance
Sacrifice two Eldrazi Scions: Return Deathless Behemoth from your graveyard to your hand. Activate this ability only any time you could cast a sorcery.

Equipped creature gets +4/+2.
Equip—Sacrifice a creature.

( can be paid with either or 2 life.)
Target creature gets -5/-5 until end of turn.

Whenever you crank Duplication Device, until end of turn, target creature becomes a copy of any creature on the battlefield, except it's an artifact in addition to its other types.

Flash
Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
When you cast this spell, tap up to four target permanents.

Devoid (This card has no color.)
When you cast this spell, you may pay . If you do, gain control of target creature until end of turn, untap that creature, and it gains haste until end of turn. ( represents colorless mana.)
Haste

, Sacrifice Emrakul's Evangel and any number of other non-Eldrazi creatures: Create a 3/2 colorless Eldrazi Horror creature token for each creature sacrificed this way.

Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.

Endless One enters the battlefield with X +1/+1 counters on it.

Whenever a creature you control mutates, put a +1/+1 counter on that creature and you gain 2 life.

Trample
When Ethereal Elk enters the battlefield, you may search your library and/or graveyard for a card named Vivien, Nature's Avenger, reveal it, and put it into your hand. If you search your library this way, shuffle it.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Destroy all lands.
II, III — Each player returns two land cards from their graveyard to the battlefield.

Cast this spell only if you control two or more Vampires.
Destroy target creature. You gain 4 life.

Destroy target artifact or enchantment with converted mana cost 4 or less.

Kicker (You may pay an additional as you cast this spell.)
When Gatekeeper of Malakir enters the battlefield, if it was kicked, target player sacrifices a creature.