I tried this, and you're right, it works....but how? How is Sickening Dreams killing the creatures with more than 3 toughness?

To start with you have 6 cards in your hand, Sign in Blood, Sudden Impact, Sickening Dreams, Corrupt, and two Bloodghasts. You play two of those cards, leaving you with 4. You then play Sickening Dreams and discard 3 cards...is it counting Sickening Dreams as being discarded to itself?

@ faile486: All eight elf tokens would normally be 1/1, but they are being given +1/+1 by the Imperious Perfect, right? Well, when you kill that off with the 3 damage, the rest of the elves that have toughness 4 now have toughness 3... and 3 damage... dead. And then finally the Heedless ones have toughness equal to the number of elves about. Well, they're the only ones left. With 3 damage. Dead. So, yeah, 3 damage to all creatures wipes her elves off the table.

I have tried this and is still leaves her with 2 live not sure what i am doing wrong but it doesn't work on my game