The Scorched Planes are known for frequent firestorms that can rain down at any moment, striking anyone unlucky enough to be caught below. This has made my travels through it particularly short.
|Inferno is often either a really good card or a really bad card depending on your train layout, and if it's a good card, you want to play it every time you draw it. Bringing down its otherwise difficult-to-afford cost lets you do that.|
|Inferno can be really strong if you can play it every turn on a floor, decimating most enemies without putting your units in harms' way with correct placement. However, this upgrade requires support to work because of the high ember cost of this card, and applying Keepstone means you can apply one fewer Emberstone on it. If you aren't able to afford playing a holdover card, its holdover property does not work. However, Artifacts like Split Anvil, Lightstone Casing, or a Fel's Remorse or two can make this work.|
See: Version History