I made a Firefox/Chrome extension that displays additional score information for 2 players games and replays.
The black star displays your current played cards prestige points and related end-game effects: Ragfield's Helm, Sealed Chest of Urm, Jewel of the Ancients and Io's Minion, but NOT the Lantern of Xidit's bonus.
The bottom left star displays the total score: crystals + cards' prestige points (and related end-game effects) + crystal loss from used bonuses.
All the used data is available from the play area at any time, and you won't rely on an external calculator (chrome URL bar, for example) or your brain.
It is available on Firefox and Chrome.
https://addons.mozilla.org/en-US/firefo ... -prestige/
https://chrome.google.com/webstore/deta ... amejilcch/
Note: on firefox, you may have to reload the page if the stars aren't present at the game start.