Deepcavern Imp
Creature — Imp Rebel
Flying, haste
Echo—Discard a card. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
Scott Altmann
Future Sight (FUT)
• #83Rulings
If you have no cards in hand, you can't pay the echo cost and Deepcavern Imp will be sacrificed.
(wotc • 2007-05-01)
Rulings
If you have no cards in hand, you can't pay the echo cost and Deepcavern Imp will be sacrificed.
(wotc • 2007-05-01)