These effects make sure that even a small 1/1 creature provides value to your overall strategy
That said, the drawbacks start immediately as well, as opposed to three turns later
And that is about as a definitive an answer as I can give
This allows this card to be very versatile, allowing you to survive the game for longer if your life is low or burn the opponents if it is high
for example, your cool counterspell should be blue, your hasty creature is likely red, a card that cares about power is green, and so on
(Then planeswalk away from this phenomenon.) The Night of the Living Dead Phenomenon When you encounter The Night of the Living Dead, each player exiles all creature cards from his or her graveyard, then sacrifices all creatures he or she controls, then puts all cards he or she exiled this way onto the battlefield