Commander effects

[Lunis22]

Can a commander use a bestow effect if it has one?

[rarehuntertay]

Only if said commandeer is in your hand

[Splicer]

I think he means, "Can you cast it as bestow from your command zone?"

The awnser is yes

[Ekann1]

Besides the fact that there are no legendary bestow creatures (yet), splicer is right. Here's the ruling.
Nothing about bestowing it from your hand.
702.102a: Bestow represents two static abilities, one that functions while the card with bestow is on the stack and another that functions both while it's on the stack and while it's on the battlefield. "Bestow [cost]" means "You may cast this card by paying [cost] rather than its mana cost." and "If you chose to pay this spell's bestow cost, it becomes an Aura enchantment and gains enchant creature. These effects last until one of two things happens: this spell has an illegal target as it resolves or the permanent this spell becomes, becomes unattached." Paying a card's bestow cost follows the rules for paying alternative costs in rules 601.2b and 601.2e-g.

[particle]

so what about a card like {yawgmoth's will}. if {hopeful eiodolan} is in your graveyard, can you bestow it on a creature you control?

[Ekann1]

According to this ruling, I think yes

[Lunis22]

Chromatincore is a legendary creature with the bestow effect

[Sardok]

Chromatincore is a legendary creature with the bestow effect

Nope.

Its mythic rare, but it's not legendary.

[Splicer]

{Chromatincore} is a legendary creature with the bestow effect

Nope.

Its mythic rare, but it's not legendary.

For the people who don't know.