Giant Death King, Kroll

Trample, Hexproof, Lifelink

{4}, Target 1 zombie creature you control, its base
power and toughness becomes 7/7 until end of turn
and becomes a Giant in addition to its other types

Whenever a zombie creature you control destroys a
non black creature, you may pay {5} and if you do,
return the destroyed creature to the battlefield under
your control except it is a zombie in addition to its
other types