Unchecked Altering Behemoth

Trample, Menace
{5}{b/g}Irradiate Add a +1/+1 counter on it, then
put a Hexproof counter on the irradiated creature.
(Whenever you cast this creature’s spell, you activate another creature’s spell as long as it’s casting cost is
equal or less to this card.)
Whenever a non-human creature dies on the battlefield, create a 1/1 {b}{g} Mutated Growth creature Token with "sacrifice this creature
and add one {g} or {b} land"