Johkar, Lunatic Conclave

Lunacy (This spell costs {1} less for each card sharing
a card type with it that was put into your graveyard
this turn.)
You cannot cast spells from your hand.
At the beginning of each upkeep, exile the top
three cards of your library. You may play them
this turn as though they had flash.
When life's the joke, everyone's laughing.