As Trifurcated Research enters the battlefield, you exile the top ten cards of your library and an opponent divides them into three piles. Then you divide the labels Painful, Echoing and Forceful between those piles. You may play those cards.
Whenever you play a Painful card, lose 2 life.
Whenever you play an Echoing instant or sorcery card, copy it.
Forceful spells you play can't be countered.
Created for Challenge # 147. This was where the phrase "three piles" naturally led me...