[Coldsaturn]

Forgot to add:

In the Wish menu, where you pull for cards (like Xspace Echo), you have:

- A guaranteed 5-star within 70 pulls
- A guaranteed 4-star every 10 pulls

If you tap on the banner telling you how many pulls you need to get the 5-star, you'll access an additional guide on rewards based on how many pulls you do: up to 100 pulls you get rewards every 25, after 100 pulls you get rewards every 50. Most notably, every 150 pulls you get a Wish Crate that lets you choose a 5-star card among the 10 available.
Be very smart and use the crates to select pairs so that you get special companions! The usual strategy is to get half of the pair through regular pulls, and then use the crate to complete the pairs (so you're advised to hoard the crates). Other players choose differently because they're uninterested in some myth companions and so are fine with waiting for them to get pulled normally through wish pulls (I got Caleb's regular myth companion this way).

(they're all standard myth = more powerful than regular companions, less powerful than their limited myths available only during specific events)

Xavier: Lightseeking Obsession + Lightseeking Shadowrend
Zayne: Promise Everlasting + Forever Sealed
Rafayel: Deep Sea Promise + Deep Sea Riches
Sylus: Captivating Lesson + Captivating Flavor
Caleb: Farspace Bloomfall + Farspace Deprivation

Of these, it's pretty much common knowledge that Abysswalker (Rafayel) is the strongest of the standard myth lot, and Xavier's is so lame that they compensated by making his limited myth companion Lumiere insanely strong. I remember you having already pulled one card for the Abysswalker myth, that would put you at an advantage of getting the second card to complete the solar pair so you get the companion.