Disturbing Dream

Whenever you would cast a Nightmare spell
that isn't named Disturbing Dream this turn,
copy it (The copy becomes a token). Put the original in your graveyard. Target player loses
[X+] 3 life [,Where X is the number of cards in
your graveyard].

Sleep Paralysis {3}{b}{b}{g} You may cast this spell for its alternate cost. If you do, add the bracketed text to
the card. Activate only if you have 4 or more card types in your graveyard.