Diviner is an underpowered and boring alternative to Aiki. First, it's a single subroutine, which is a poor setup for playable ice. Of the 37 most commonly used ice, only 6 have one subroutine, and 5 of these (Ping, Tollbooth, Funhouse, Turnpike and Magnet) are mainly used for their ability and Vanilla is used as the cheapest gear-check to force runners to dig for a breaker. There's no scenario where Diviner is the best ice you could have. I don't even think there's a scenario where it's a good ice to have. It's too porous to reliably create short-term gains, and it's not efficient enough for long-term gains.

This card would be more interesting if it had 2 subroutines: 1) do one net damage, 2) reveal the top card of the stack and end the run if it has an odd cost. It is strange that Diviner as actually printed does not reveal any future knowledge. The only prediction we can make from Diviner is that you're not playing this card in standard, and nobody else is either.

(Thanks to Greasythumb for pointing out that Aiki has not rotated yet).

This is a fun ice that will see play in many Jinteki deck. At 3 strenght, it not very strong. Unity and Amina will break it for 2, Engolo and Black Orchestra will break it for 3 and Buzzsaw for 1 (funny that anarch have the best decoder for this).

At a cost of 2 to rez, it will not break the bank. It does that annoying 1 point of net damage, which mean that you can try to soak it, if you have only even costed (0, 2, 4, 6) cards in your hand.

But is it worth it in your deck? Yes, because it is still a cheap ice to rez and does something on a facecheck. But don't count on it having much stopping power by the late game. But it will grind the runner a bit every runs.

OK art, OK quote, OK ice, OK card.