Based on a Nightmare Prism control deck by Calebovitch.
This is not a competitive deck but it is a blast to play and if it gets going watch out. Fun to drop Icaria in a mono Primal deck...
Piloting is tricky. The most important thing is to stick a
Nightmare Prism early. I'll keep a one power hand as long as the Prism is in it. Otherwise you have to hope to draw it or an
Elvish Swindler by turn 5. If you go to turn 7 without a Prism you'll have a tough time recovering.
Tome of Horrors is just there because it's another annoying card. It also distracts opp. from the Prism. The 'Tome' will attract removal first, saving your main engine card.
Second Sight is how you handle off color cards before you draw the Prism. After Prism you put the off color card on top and when you draw it... voila, it's colorless.
Singletons
Adjudicator's Gavel - No void shenanigans. Call it up with Swindler.
Eilyn's Favor - or Seek Power... though I find the aegis to be useful early (before the
Cobalt Waystone comes online)
Portent Reader - Another chance for a Second Sight
Re-read - Get back your favorite spell
Royal Decree - Not sure why this is here... I rarely cast it with onslaught...
Icaria, the Liberator - It's a blast to drop this but it doesn't happen that often honestly. So why multiples...
Market
Vision of Austerity - Tie up problematic relics
Severin, the Mad Mage - good body with relevant ability re: Tomes
Display package - These are great versatile spells. Make sure you know what all the effects are (9 of them).
Remember all the market cards require Prism to be in play. Don't go to the market beforehand or you will be sorry...
Mulligans
I've already mentioned if there's a Prism in your hand almost anything is a keeper. If you have 3 or more off color cards, no Prism and no Second Sights, ship it. Otherwise play and get a feel for what works.
I hope you enjoy playing this deck! Like I said it's not really competitive but is is fun.
ltg