Elhoc, Bio-Staff Beholder

When Elhoc, Bio-Staff Beholder enters the battlefield, Put an Equipment artifact token onto
the battlefield attached to target creature you
control, with "Equipped creature gets +X/+X,
where X is equal to the greatest power among creatures you control."
Equipped creatures you control have "{t}: Put
1/1 green Snake creature token with deathtouch
onto the battlefield under your control."