Mass Hysteria

Mass Hysteria


All creatures have haste.

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Set Rarity
Mirrodin (MRD) Rare

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Format Legality
Leviathan Legal
Unformat Legal
Limited Legal
2019-10-04 Legal
Commander / EDH Legal
Duel Commander Legal
1v1 Commander Legal
Oathbreaker Legal
Casual Legal
Vintage Legal
Block Constructed Legal
Tiny Leaders Legal
Highlander Legal
Canadian Highlander Legal
Modern Legal
Legacy Legal

Rules Q&A

Latest Decks as Commander

Mass Hysteria Discussion

Pikobyte on Xyris's Noodle Party

17 hours ago

You don’t have to go all in for sure, but I can highly recommend cards like Battle Hymn or Xenagos, the Reveler. Add in a few tutors to find phyrexian altar and the deck should play much smoother and better. My list looked pretty similar to yours at the beginning, but cards like ogre battledriver turned out to be dead cards often since it only affects tokens that come into play after it. Mass Hysteria or Fervor affect even the creatures that came into play before. You sacrifice some potential power there for less situational card choices. You have to see what works best for you

Goblin_Guide on Goblin_Guide

2 weeks ago

Here's a bigass combo for the new Omnath, Locus of Creation:

The basis of the combo is Ruin Ghost + Retreat to Coralhelm + any haste enabler + any land that taps for or more. This means you trigger Omnath infinite times, but as many people have pointed out, his trigger doesn't do anything after the third time (as in he doesn't specify what to do after the third resolution of the ability). The easiest way to remedy this is to blink Omnath, in this case with Deadeye Navigator and Omnath himself -- every second trigger gives you , so you can use the blue and any other to flicker him and start over. Still, this isn't infinite mana though, because Ruin Ghost's activation is specifically , so we need a mana doubler of some kind, in which case we win!

Here's a list of all the cards:

Omnath, Locus of Creation + Ruin Ghost + Retreat to Coralhelm + Deadeye Navigator + Mass Hysteria + any land that taps for or more + something in the vein of Zendikar Resurgent. And none of it requires , so you can put this into your EDH Omnath deck. (And yes there are probably easier ways to go infinite with Omnath, but I wanted to include the Coralehelm Ghost combo.)

ive-been-degaussed on Hallar, the Firefletcher EDH

3 weeks ago

Mass Hysteria is a budget substitute for Concordant Crossroads. :)

unwucht on Krenko's Goblin Swarm

3 weeks ago

I found Mass Hysteria to be quite a double sided sword. I felt very confident having it on the board until my opponent started to drop hydras :/. So I went for Fervor instead.

For reference see my decklist

Peoyogon on

3 weeks ago

I am definitely not familiar with cEDH metas but would Anger be of use for this deck? Mass Hysteria and Concordant Crossroads might also be useful as a more reliable version of this effect but I could also see it backfiring by it providing mass haste to your opponents.

Peoyogon on xenagos warp world

4 weeks ago

Anger might be an interesting card to try to give all of your creatures haste so they can attack right after they come in from Warp World. It might be challenging to get it in the bin though... You could always just go for Mass Hysteria or Concordant Crossroads and have the same effect.

Beastmaster Ascension could also be a good finisher; it can come on the field and get activated out of nowhere either with Warp World or ulting your Oathbreaker, especially if they all have haste!

Peoyogon on Thantis Trouble Maker

1 month ago

I'm not sure these would be 'good' but global effects seem like they might be fun! Maybe Mass Hysteria/Concordant Crossroads, Furnace of Rath/Dictate of the Twin Gods, and Everlasting Torment.

Sudden Spoiling also looks like it could do some work, both offensively and defensively.

Bluntflame on Modern Storm Mutate!

2 months ago

Your idea is not bad, so I will run 3 Mass Hysteria in place of Narset's Reversal, and 2 Retraction Helix so that is will be able to mutate infinitly! I will test that theory right now!

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