Teferi's Imp

Oracle Text

Flying

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Whenever Teferi's Imp phases out, discard a card.

Whenever Teferi's Imp phases in, draw a card.

Card Rulings

10/4/2004 There is no negative effect if you can’t discard when it phases out. You still get to draw a card when it phases in.