It's ability to become a creature does help offset that last part, though
Blackbloom Rogue and Malakir Rebirth are really not that bad
When you have some stuff but are not in a position to win with a mass sacrifice
I really like this effect on a wheel type card, as it lets you recover and rewards more risky behavior which is very much in Reds, erhm, wheelhouse, by tempting you to discard more cards for more mana
Playability: For a blink deck in this day and age, NOT having a repeatable blink outlet (such as Roon of the Hidden Realm or Aminatou, the Fateshifter) or a solid blink payoff (like Cloudblazer or Ephara, God of the Polis) makes a preconstructed deck weak and hard to pilot effectively
Whenever you cast a creature spell, create a 1/1 green and white Human Soldier creature token with training