Elder Deep-Fiend

Elder Deep-Fiend

Creature — Eldrazi Octopus


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 Elder Deep-Fiend, tap up to four permanents.

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Have (3) Mortiferus_Rosa , metalmagic , gildan_bladeborn
Want (1) Etinifni

Printings View all

Set Rarity
Eldritch Moon (EMN) Rare

Combos Browse all


Format Legality
Tiny Leaders Legal
1v1 Commander Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Modern Legal
Block Constructed Legal
Pioneer Legal
Leviathan Legal
Legacy Legal
Frontier Legal
Duel Commander Legal
Oathbreaker Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Elder Deep-Fiend occurrence in decks from the last year

Commander / EDH:

All decks: 0.01%

Elder Deep-Fiend Discussion

ZendikariWol on Temur Emerge

3 weeks ago

I actually think that you should consider a couple things:

1- cut Red. All you run it for is Kozilek's Return and Bonecrusher Giant.

2- consider that this deck kinda feels like it should be UG Ramp/Dredge (maybe Sultai??). As a result, consider maybe making this an Emrakul, the Promised End deck instead of Elder Deep-Fiend?

3- definitely put in two more copies of Uro, Titan of Nature's Wrath. I mean, if you draw more than one, just cast it and use the ETB!

4- consider running Grisly Salvage and some black removal. Consider also running a couple more baby Jace (you can always pitch extras to his own ability). Consider Omen of the Sea, as it can put another type in your grave. Arboreal Grazer lets you slam Uro on turn 2. Growth Spiral gets you closer to that sweet, sweet Emrakul/Deep-Fiend.

5- take everything I say with a grain of salt. I am a casual Johnny trying his best.

Hi_diddly_ho_neighbor on

3 weeks ago

This build looks pretty complete for a sea monsters theme. If you are concerned about additional ways to cheat out the big Krakens and all, then I would suggest looking at Quicksilver Amulet and Elvish Piper. Otherwise I think you are running enough ramp to cast the sea monsters fairly early.

A few other cards you might consider are Wonder (for Stormtide Leviathan), Thryx, the Sudden Storm, Thada Adel, Acquisitor to steal opponents mana rocks, Elder Deep-Fiend as a safety net, Propaganda to blunt early aggression, Giant Oyster because it is on theme and hilarious, and Rush of Knowledge

+1 from me!

lgdlord56 on deep dregde

1 month ago

Yeah instead of closing the game with Driven to Dispair usually the games end with Elder Deep-Fiend sac Sanctum of Ugin to get Decimator of the Provinces

Lang638 on Abzan Eldrazi Emerge

1 month ago

Hi Kazierts, Thanks for your suggestions. I think you're right about having to decide whether to go emerge or token-based with my strategy. When I look at all of the emerge cards from Eldritch moon, it really is only those creatures in blue that are worthwhile (I'm thinking Elder Deep-Fiend here.) Your creature suggestions are helpful. I'll playtest it next time I get a chance. Thanks! Lang638

Lordeh on Kiora's Dominance

1 month ago

I would consider running Fae of Wishes in this deck and a copy of each Kiora in your sideboard so you have some way of tutoring them. Otherwise if you never draw one or both of them your deck will just sit there doing nothing.

Also consider an alternate win condition like Elder Deep-Fiend as a way of using extra creatures to tap down your opponent or a creature that needs +1/+1 counters such Walking Ballista Hangarback Walker or a more budget friendly Managorger Hydra .

Magnanimous on What Are Some Of Your ...

1 month ago

In rough order of how much I like them:

Urborg, Tomb of Yawgmoth and Spreading Algae

Flagstones of Trokair and any sacrifice effect, like Smallpox, Elvish Reclaimer, and Crop Rotation.

In a similar vein, Brought Back and evoke spells like Shriekmaw and Mulldrifter.

Sundial of the Infinite + Glorious End or Pact of Negation effects. The Sundial can end the turn and counter the ability that would make you lose the game.

I recently saw a deck based around Haunted Dead that played Prized Amalgam + other graveyard shenanigans, Fiery Temper, and Elder Deep-Fiend in Pioneer, so that was pretty cool and synergistic although not a standard two card combo.

Young Pyromancer/Monastery Mentor/Goblinslide + Blood Funnel.

Montezuma2 on Pioneering Deep Fiends

1 month ago

I also play izzet emerge and I cut Mutavault for additional Sanctum of Ugin because chain Elder Deep-Fiend while often just win the game

Rhadamanthus on Timing question involving the stack ...

2 months ago

Yes, you can make that work.

When an ability triggers it waits until the next time a player would get priority to actually go onto the stack. This means anything that triggers while you're in the process of casting a spell will wait until you're done with the casting process to be put onto the stack.

In your example both Kozilek's Return and Rekindling Phoenix trigger while you're casting Elder Deep-Fiend (so does the Deep-Fiend, of course, but this doesn't matter for your question). The triggers try to go onto the stack at the same time when you're done casting the spell. Since you control the triggers, you decide the order.

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