Go primitive with stones (Ancient Stone, Pnakotic Manuscripts) and arrows (Ornate Bow). A simple deck of dumping many Relic cards inside The Forgotten Age Investigator Expansion box into it, then gacha them out with Dr. Elli Horowitz.

At the end of upgrades you will have 4 high XP team play cards : 2x Cryptic Research (can support others, or your own Ancient Stone triggering) and 2x Pnakotic Manuscripts. Try assemble your team such that she can improve consistency of other teammates.

► About "2 Packs Deck Guide"
　A series of decks made with the new distribution model in mind, requiring a Revised Core Set box + just 1 more Investigator Expansion box. Φ character on the deck's name means the additional box it uses is The Forgotten Age Investigator Expansion.
　It maximizes the chance of newcomers being able to build and learn to play the game, enjoying the story on Standard difficulty ASAP. They can then get into deck-building later if they wished to do so. See other decks in the "2 Packs Deck Guide" series here.

(View at arkham-starter.com)

☆ : Using Shrewd Analysis, you use 3 XP for both copies but you must select the upgraded versions at random. If you got the damage version, good! If you got the horror healing version, it can help alleviating Call of the Unknown punishments.

How to play

Use Vantage Point on where you are moving to that has no clue (often low shroud), so you can move some clues elsewhere (e.g. VP locations) here then use her to investigate it.

If enemy has alternate defeat condition as an ability on its card (often testing // all which she has), use True Understanding to grab some clues.

Truth from Fiction is just more commit before you get to 20 XP+ range where you get some Assets using secrets.

Note that you have to buy Ancient Stone (1) going into 2nd scenario so you have more scenarios to identify it. It is best that you get 4 XP+ in the 1st scenario so you can also buy 1x Ornate Bow. If you got just 3 XP, give up on the stone and buy just Ornate Bow. (Can't be helped, but bow is very useful.)

After reaching 2x Ornate Bow, mulligan for Dr. Elli Horowitz and put away all Ornate Bow back to deck. Hope that playing Dr. Elli Horowitz gets the Ornate Bow on her. If you can do this, your hand can hold Ancient Stone / Flashlight / Magnifying Glass / Pnakotic Manuscripts instead and would become a fine flex Seeker.

If you got 5 resources to spare with Backpack + Dr. Elli Horowitz, you can play Backpack first and intentionally not pick the Ornate Bow to improve the concentration of the bow when you play Elli next.

After upgrading both Ancient Stone (1) for 3 XP with Shrewd Analysis. We then use 8 XP to add 2x Cryptic Research that can fast draw 3 cards to combo with the stones.

The next "stones" to get are 2x Pnakotic Manuscripts for 10 XP (!). It is a better target for Truth from Fiction than the Ancient Stone, as well as an another "hit" with Dr. Elli Horowitz even if you didn't get the Ornate Bow as normal play cost is a hefty 5. Dead Dr. Elli Horowitz can take it to discard pile so you can play a 2nd copy without hitting Unique constraint.

Before using Cryptic Research on yourself, ask your fighter if they need to find something or need more cards on hand or not.

The timing which Thermos slowly goes out of the deck is around mid to late scenario, which I guess someone might got to 2 trauma around this point.

Ursula has 3 and 4 which often means using on Pnakotic Manuscripts should pass the Revelation test without a commit.

Other tricks

• You can take investigate action of Flashlight or unidentified Ancient Stone when using her ability.
• Not often useful but very cool : You can hold the Ornate Bow and Dr. Elli Horowitz holds an another Ornate Bow if you want to go full fighting. To go for this, you need 1x Ornate Bow on you first without seeing the 2nd one. Use Backpack to thin down deck (don't pick Ornate Bow if found among 6 cards), then play Dr. Elli Horowitz and hope. Then you can nock 2 arrows on different bow and burst 6 damages.
• Jake Williams : Has draw effect that works with the Ancient Stone.

Solo?

It is not impossible with her evasion, early 2x Ornate Bow purchases, and some luck with Dr. Elli Horowitz. I put on the Solo tag anyway because it is theoretically possible to pull off, but it will be hard having to reload the bow without someone else taking off the heat.

I would modify the starting deck to include 2x Mind over Matter and never remove them. Something like Swarm of Rats is bad to evade as it has high and Hunter to come back to annoy you later, when you could just punch it, but you have 1 !