Major plus points for its flavor text, at least
This is especially powerful when you control creatures with strong attack triggers that lack haste, like Etali, Primal Storm
Two or more turns of unblocked attacks from Goblin Guide is more than enough payoff for any aggro deck, especially when two or more hit the field and every trigger just reminds the defending player about that useless counterspell theyll draw next turn
While its generally better to find a card you can cast immediately after tutoring so your opponents have less time to plan around you, sometimes the threat of a board wipe like Damnation or a counterspell like Cryptic Command will convince opponents to play a little more cautiously, giving you more time to set up for an even bigger play down the road
Satya relies on his attack-triggered ability, which can annoy enemy players
Proxies are great when you want to play Magic: The Gathering but cant get the cards you want