Is Crossroads Candleguide legal in Standard, Modern, and Commander?

Crossroads Candleguide is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Crossroads Candleguide?

Crossroads Candleguide is an Artifact Creature — Scarecrow. Its oracle text reads: "When this creature enters, exile up to one target card from a graveyard. {2}: Add one mana of any color. *Do the candleguides' heads turn to follow you as you pass, or is it merely a trick of the flickering light?* Power/Toughness: 3/4"