Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)
, : Nightfall Predator fights target creature. (Each deals damage equal to its power to the other.)
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Nightfall Predator.
Tap target creature. It doesn't untap during its controller's next untap step.
Investigate. (Create a colorless Clue artifact token with ", Sacrifice this artifact: Draw a card.")
Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.
Flying
Discard a card: Prognostic Sphinx gains hexproof until end of turn. Tap it.
Whenever Prognostic Sphinx attacks, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)