Hartotroph, The Nightmare

When Hartotroph enters, choose an opponent. As
long as that opponent controls no creatures with
flying, Hartotroph has flying. The same is true for
first strike, double strike, deathtouch, haste,
hexproof, indestructible, lifelink, menace, reach, trample, menace, shroud, skulk, and vigilance. If
the chosen opponent loses the game, Hartotroph has
all of the above keywords.
"I am what you are not. I will destroy you, and I
will become stronger."