Battlefront Chef

When Battlefront Chef enters the battlefield,
create a Food token.
Convergence — At the beginning of your upkeep,
if there are four or more legendary permanents
on the battlefield, create a Food token.
{t}, Sacrifice a Food: Add one mana of any color.
"Er, yes. Actually, I used it as a garnish on the pork
steak, too. And made a chutney out of it. Chull dung,
it has many uses, I found."
—Rock