
The other review is underselling this card. At least on standard difficulty I think this is one of the top 5 best level 0 Seeker cards ever printed and a card that I shove into most of the decks that have full access to level 0 seeker cards. Comparing this to No Stone Unturned this card only digs 3 deep instead of 6 but doesn't require an action or 2 resources to use. This card is very easy to just throw onto any test that you're all but guaranteed to pass anyway (such as investigating a low shroud location) and then use it to have Eureka be replaced by whatever's the best card in the top 3 of your deck. The icons it has are fantastic, it's basically the only 3 skills you're likely to ever use so it can be committed to almost every test you take. On top of that, there's a lot of tests you might take where you're +3 above the test for example and passing it is important, but you don't want to spend any of your valuable cards to boost yourself up to +4. Eureka is great in those situations because you can insure that you are protected while also having the card cycle into something you need.
The card is just super versatile and is always useful, It's not necessarily a card that'll win you the game but it'll help you find those cards and is never a bad draw.