Three Drop Disease

Three Drop Disease : the mana curve trap where a glut of otherwise reasonable three drops causes your deck to underperform both early and late in a game.

 

Was Keeper of the Quiet Hour a good card?

Yes.

Was Keeper of the Quiet Hour an important card?

Much less so in your average draft, more than you would think to the format as a whole. Keeper of the Quiet Hour is a key cause of three drop disease in Reality Fracture draft, and one of the cards hit the hardest by it.

What Causes Three Drop Disease?

 

Most of three drop disease isn't deterministic to Magic's game engine, but is ingrained in long term design trends.

Part of it is the average three drop isn't that much different on board impact than a decent two drop. For a long time in Magic design this wasn't the case, making three drop disease a “modern phenomenon” in the sense that it has only become normal in the last decade of 31 years of draft. 
 
But that's just a reason to load up on two-drops over every part of the mana curve, not a three-drop specific problem.

 

The other part of the squeeze comes with another design trend. Four- or five-drop cards, depending on the set, tend to represent a significant step up in power level. This is mostly to mitigate the tempo loss of getting your expensive threat hit with a generic removal spell, where the three-drop versus Murder exchange is at least net mana neutral.

And this is where the problem transcends design files and enters raw math intertwined with a basic theory concept. Cards should get more impactful as they get more expensive, but cheaper cards can catch up to expensive cards if you get to make multiple plays in a turn.

Ignore that spreadsheet for a second, because the first part is basic as hell. If you are talking about two-drops catching up to higher cost cards, you get to the double-down point on turn four. The only gap where a pile of two-drops can't double spell is exactly turn three, and we established that is a point where it isn't that costly to underdrop. 

With threes, you have to survive turns four AND five before you get to six mana to double up, and that's a long time for a pile of threes to be falling behind single-spelling and losing mana efficiency. You also can't really expect the card file for a set to help you out across multiple mana break points the way a two-drop can fudge it for a turn against a three. 

Now back to that spreadsheet, a Frank Karsten classic that sadly only exists on the Internet Archive these days.

You don't just have to weather turns four and five to get to casting multiple three drops. You need six physical lands to double-spell on three drops, and the basic math of the Magic game engine is fighting against that. Naturally hitting your lands on curve starts to trail off around five lands, and there's a flip side the numbers on this page won't tell you. If you hit all of those lands, that is six physical lands. There's less remaining cardboard to work with for your spells, and a large chunk of the games you have a load of three-drops in hand are the same ones you miss those land drops because all of those cards have to occupy the same physical draw steps. 

If overload your deck on three drops, everything in Magic is fighting against you. The game designers, the game engine itself, the literal physics of cardboard. Build healthier decks, play less and better three drops that serve a specific purpose.

Actionable Takeaways

- When drafting, a three-drop is closer to a four- than it is to a two-drop for curve reasons. 

- Watch for high quality colorless and hybrid three-drops as signs a format is more prone to three-drop disease.

- On the design side, my old 3/2 for three post was very much of a time and era. All the upsides were right, but that can only exist downstream of being able to keep five-drops at a less sizable scale so underdropping doesn't feel terrible against them, and that in turn is downstream of five-drops not needing to power creep common removal, and that in turn is downstream of your higher rarity design demanding less removal. Definitely not the default of a Play Booster era.