From MTGSalvation:

http://forums.mtgsalvation.com/showthread.php?t=181865

Mindbreak Trap 2UU
Instant - Trap (M)
If an opponent cast three or more spells this turn, you may pay 0 instead of Mindbreak Trap's mana cost.
Exile any number of target spells.

I guess 8x Chant is going to be very necessary in Storm now...

Thoughts? Reactions?