Knowledge Pool


Format Legality
Tiny Leaders Legal
Noble Legal
Leviathan Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Modern Legal
Penny Dreadful Legal
Vanguard Legal
Legacy Legal
Archenemy Legal
Planechase Legal
1v1 Commander Legal
Duel Commander Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Printings View all

Set Rarity
Mirrodin Besieged (MBS) Rare
Mirrodin Besieged: Mirran (MBM) Rare

Combos Browse all

Knowledge Pool


Imprint — When Knowledge Pool enters the battlefield, each player exiles the top three cards of his or her library.

Whenever a player casts a spell from his or her hand, that player exiles it. If the player does, he or she may cast another nonland card exiled with Knowledge Pool without paying that card's mana cost.

Knowledge Pool Discussion

ChurchofJhoira on Lavinia Omen Pool *Primer*

2 days ago

@CptRodgers it is, at the very least, worth trying out. The only major concern I have with that card is the consistency with which we can get that out. The advantage of our other "lock" pieces of Knowledge Pool and Omen Machine are both tutorable at instant speed via Whir of Invention . The other disadvantage is if someone casts an Abrupt Decay into that, everyone now has a means of blowing up most of your board (including your commander) that Lavinia can do nothing about.

I think if you are playing in a slower, battlecruiser meta Eye is probably fine. But the inability to tutor on demand, the ability of our opponents to cast uncounterable spells into the the enchantment, plus is 5UU casting cost; it may be risky to play in faster metas.

Give it a shot and let me know how it works out for you tho! I am all about experimentation! Those are just my concerns.

Luarviq on EDH Surrak Dragonclaw Angry Mongol Horde

1 week ago


You have a good point. I might need to run a counterspell package, after all.

So far I plan following:

To be removed:

To be added:

And Gyre Engineer is questionably to be swapped with Incubation Druid , since latter can be pumped to give 3 mana and become 3/5 to survive small wipes.

What do you think? I definetely need to clear some space, but right now I am not sure what to remove. So this is what I have: Counterspells:

Only 4 counterspells in 100-card deck... I am really not sure. Maybe Mystic Snake or Frilled Mystic would be better? Boardwipes: Other stuff

I don't run tutors not because they are expensive (Though Wordly Tutor, Gamble and Mystic Tutor are fairly affordable as an upgrade), I don't want to make deck too (uhh) strong. I made Lavinia, Azorius Renegade deck which revolves around getting Knowledge Pool out, and if I draw one of the artifact tutors and have anti-counter in hand, I win, it's only a matter of time. Which is nice to spook new players, but not that great when I play N'th game with same people.

ChurchofJhoira on Lavinia Omen Pool *Budgetless*

1 week ago

@Penthoplayer I mean I suppose Worskhop over Tec Edge is fine, but in my experience we are not trying to speed out of the gates and race. The deck wants to be slow and grindy and cards like Mishra's Workshop , Ancient Tomb , and Crystal Vein do not really fit into the overall gameplan of the deck.

The same goes for Trinisphere ... Trinisphere looks like it would be good considering Lavinia's first ability, but her first ability is really only relevant during the beginning of the game. Later on in the game it really is not that big of a deal, and taxing effects really are not that great for us overall. The ability the deck is really trying to take advantage of is her second ability. That is what works so cohesively with Omen Machine and Knowledge Pool . Fact or Fiction allows us to sift through our deck after an Omen Machine has been put into play.

That is why we run Impulse , Dig Through Time , Jace, Architect of Thought , Narset Transcendent , and Teferi, Temporal Archmage .

Kiyomei on Jimmy's Lavinia | Game Knights #23

2 weeks ago

So a no Knowledge Pool or Omen Machine version :). Where and how do you win with this iteration as the other versions so far can only assemble soft locks with the two cards i mentioned and can't really win of that either unless no one is playing a commander bigger than Lavinia because as soon as they get theirs out and it's bigger than a 2/2 you lose unless omen is paired with rule of law effects?

i also saw you had a Smothering Tithe + Stasis lock and I've recently been testing it out as well but eventually, it will fade in power the longer games drag out as they'll make their land drops and remove pieces...

Kiyomei on Lavinia Omen Pool *Primer*

2 weeks ago

There is also always the possibility that even though you have a Knowledge Pool out, people can still get your win conditions out of the way pretty easily if it's not already countered or nature's claimed xD...

You see when Knowledge Pool is out with your commander and you have a sort of win condition or something to speed up the clock in your hand you still need to let it go under the pool and cast a second spell to get it... At this point, a single instant of your opponents will cause you to lose that card due to the fact that they get to pick first if you have nothing to respond to it and they'll just choose your card and it'll get countered...

Even though Knowledge Pool is the better lock card I still think you should add a few Rule of Law cards as it creates another layer with omen machine which still isn't a hard lock if they reveal a land but hey... and they act as a backup plan when your commander is removed from the game as most of them are fairly low CMC too like Eidolon of Rhetoric or Arcane Laboratory and synergize with both pieces...

This is what I've done with the 2HG support Lavinia for my Derevi deck ;)...

Kiyomei on Lavinia Omen Pool *Primer*

2 weeks ago

@chessdude13 , euhm Sphere of Safety is not a Stax card but a pillow fort spell meant for casual aggro meta. But you got a point, Sphere effects like Thorn of Amethyst or Sphere of Resistance (Maybe you meant this one :) do increase the cost and make a Mana Crypt for example castable again... while Helm of Awakening makes a Sol Ring countered without any other effects in play...

Knowledge Pool and Omen Machine are mere soft locks as it doesn't affect commanders... and omen still lets you play from your hand while most people run interaction so 1/3 just has to have something and you're done for...

( Rule of Law effects combined with Omen Machine does lock everyone completely but then again you'll have to out-scale them and hope they have an empty board for your 2/2 to dish out 21commander damage to 3 players...

If an opponent is playing Yisan, for example, you will outright lose as his commander outruns you through all these soft locks

chessdude13 on Lavinia Omen Pool *Primer*

2 weeks ago

No Knowledge Pool for a redundant lock piece?

DiverDown on Help me improve my Lavínia

3 weeks ago

I did a lot of playtesting with new Lavinia when she was spoiled and I've found a lot of problems with the Knowledge Pool "lock". The biggest issue is that she does not stop commanders from being cast, meaning value engines like Yisan and Vannifar, or even graveyard casters like Kess and Dralnu can still operate through the Knowledge Pool . The RIP/Helm combo gets really telegraphed as well, considering that you need to cast the combo piece to give it to the pool, and then cast another spell to cast it, but there's nothing stopping an opponent from casting an instant and sending the combo piece to your graveyard unless you have a Silence or Grand Abolisher effect up or you cast a spell in response to your instant. That doesn't feel very ideal considering that you may need to cast three spells or more just to get a combo piece through. I'm not saying your deck is bad by any means, these are just apparent flaws that I've noticed in my build and every one that I've seen and you have to be really careful about what you can and can't do when running an oppressive effect like this because it can turn out to be a detriment.

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Knowledge Pool occurrence in decks from the last year

Commander / EDH:

All decks: 0.01%

Azorius: 0.08%