Krymia, Blade of Death

Deathtouch, hexproof.
Whenever a creature you control escapes, if it's
blue or black it gains your choice of deathtouch
or hexproof and is a human in addition to its
other types for as long as Krymia, Blade of Death
is on the battlefield.
Escape—{1}{u}{b} Exile 4 other cards from your
graveyard. (You can cast this spell from your
graveyard for its escape cost.)