The Plagued Locust

Mutate {2}{u}{r}{p/r}{p/u}
Flying, Indestructible
At the end of every turn, if your life total is lower
than it was at the beginning of the turn, you may
draw 2 cards.
Whenever this creature mutates, you may pay 2
life. If you do, Phyrexian creatures you control
gain flying until end of turn.