Mutant Wizard

As long as you control another mutant, mutants
you control have hexproof.
Mutated creatures you control are mutants in addition to their other types.
{6}{u}{b/g}: Target mutant's mutate abilities activate
as though it mutated this turn. That creature's
number of times it was mutated increases by 1.
Put a +1/+1 counter on that creature.