One such method of self-improvement is the usage of the Altar in the Crossroads Training area.

In short, cultivating and equipping the right Arcana Cards is a long process that requires much effort.

Hades 2 is currently in Early Access.

Arcana Menu overlaid on melinoe at the Altar in Hades 2

As a result, the details below are likely to change over the course of development.

Unlocking these cards is only the first step, however.

You must then’activate' these cards.

Rogue Legacy 2, Hades and Cult Of The Lamb.

To increase your total Grasp pool, you’ll need to spendPsyche.

The cost to increase your Grasp pool increases heavily as your pool expands.

Both Ash and Psyche can both be acquired during your nightly runs.

An incomplete Arcana board in Hades 2

Note that three cards of 0 cost do not count.

Activate at least one card of each Grasp cost from 1 through 5.

Active no more than 2 cards that have the same Grasp cost.

A full Arcana board in Hades 2

Activate The Fates, The Boatman, and The Champions.

Activate all 5 cards in any other row.

Activate no more than 3 cards total.

Melinoe, Hecate, and Witches surrounding the Crossroads cauldron in Hades 2

This will unlock the ability to upgrade your Arcana Cards up to two times each, making them stronger.

The table below listsevery Arcana Card’s effects, including the upgrades and the upgrade costs.

The bolded text shows what changes after each upgrade.

Hades 2 Hub World - The Crossroads

Arcana

Effect

Upgrade Costs

Slow down time while channeling Omega Moves for2/3/4seconds.

1 Moon Dust

3 Moon Dust, 6 Moly

After exiting a location, restore2/3/4life.

Double that if you have less than 30% life remaining.

Indie Games

4 Moon Dust

5 Moon Dust, 10 Moss

Gain a6%/8%/10%chance to dodge.

4 Moon Dust, 10 Nightshade

Increase your Life and Magick totals by20/30/40each.

6 Bronze, 4 Moon Dust

Restore2/3/4Magick every second.

Hades 2

5 Moon Dust, 10 Cattail

Charge your Hex by2/3/4points per second.

5 Moon Dust

10 Moon Dust, 8 Myrtle

Take zero damage from1/2/3hits from bosses.

6 Moon Dust, 15 Limestone

Your sprint is20%/25%/30%faster.

6 Moon Dust

12 Moon Dust, 1 Star Dust

Gain3/4/5Life and Magick every 5 locations you complete.

6 Moon Dust, 8 Glassrock

Your Omega Cast detonation has+50/+75/+100power.

8 Moon Dust, 8 Iron

Set forth with1/2/3Changes of Fate.

Your Changes of Fate can alter Location Rewards.

6 Moon Dust, 12 Fate Fabric

Start the night with200/250/300gold.

4 Moon Dust, 12 Fate Fabric

Set forth with2/3/4Changes of Fate.

This does not alter what your Change of Fate can alter.

5 Moon Dust, 3 Zodiac Sand

Set forth with1/2/3Changes of Fate.

Your Changes of Fate can alter Boons.

10 Moon Dust, 9 Shaderoot

Each night, you have1/2/3chances to turn Minor finds into Major finds.