Gathan Raiders

Hellbent — This creature gets +2/+2 as long as you have no cards in hand.
Morph—Discard a card. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

The List

Time Spiral Remastered

Hellbent — Gathan Raiders gets +2/+2 as long as you have no cards in hand.
Morph—
Discard a card. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Archenemy

Hellbent — Gathan Raiders gets +2/+2 if you have no cards in hand.
Morph—
Discard a card. (You may cast this face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Future Sight

Hellbent Gathan Raiders gets +2/+2 if you have no cards in hand.
Morph—
Discard a card. (You may play this face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to Gathan Raiders while your hand is empty may become lethal if a card is put into your hand during that turn.

Morph

(You can cover a face-down creature with this reminder card.
A card with morph can be turned face up any time for its morph cost.)