Being able to finish off the game with what is essentially direct poison damage after the Infect creatures are dealt by opposing removal and sweepers with is a new and potentially powerful line of attack for the archetype, and this doesnt even include the fringe combo potential
There are several other spells that do something similar, namely: Circuitous Route Vastwood Surge Ranger's Path Migration Path
Yes, you can cheat it out with Scrooge McDuck - Richest Duck in the World but that is yet even more setup required for this combo
When placed on an evasive creature like Spyglass Siren, it allows the player to draw a card each time they deal combat damage
Commander decks also benefit, with outlaw legends and crime payoffs creating fun synergies in the Commander format
Tamiyos Safekeeping Essentially greens version of Blacksmiths Skill, this spell trades the boost for artifact creatures for the upside of gaining you two life