It has the following two extremely strong abilities: If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead
Umezawa's Jitte, Walking Ballista, Consul Flagship and the various colourless options are hardly cheap or mana efficient ways of doing what Arc Trail does
These are usually spells cast from exile, the graveyard, or the command zone
Yeah, the flavour here is that the stronger kobolds abuse the weak and this abuse is what gives them the stat gain as the lesser kobolds are forced to work
Unique Features and Artwork Unique or alternate artwork, especially from renowned artists or featuring special designs, enhances a card's appeal
These decks might not translate if you try a Commander variant, for which you would tweak any of these decks