Nostradamus, forgotten one

hexproof, pattern seeker, resiliance

When Nostradamus, forgotten one enters the battlefield, put one token +1/+1 on him for each creature a player controls but doesn't own

abilities and spells that change ownership of creatures
cost -{1} to cast for each token on Nostradamus, forgotten one. Ignore all other effects

{t},{b}{g}{u}: target opponent takes control of target creature or take back control of a creature you own