I decided that I would take a few minutes to explain the highlights and justifications for each change that you're seeing with each patch that actually changes balance. If you have any questions about what's here, just ask!

Welder Helper

One of the most efficient cards in-game, Welder Helper has been overperforming ever since Shiny Shoe made it apply Armor 20. I dialed this back to Armor 15, and it now feels in-line with the rate you'd expect for 1 ember and 1 space on a floor with the possibility of Endless.

Imp Parade

The previous iteration of this applied health and Multistrike 1 at all ranks, and was overperforming into Ring 3 with those stats on Imps. Similarly, it was overperforming with Impish Scholar, as it summons out an Imp-in-a-Box. This version dials back the pre-Ring 3 buffs while just outright adding the created Imps to your hand to avoid allowing Imp builds to go too insane too quickly.

Rootseeds

Both Hollows and Edge Prior are completely useless in core Exile Awoken because this card has no healing component. Adding a 1 heal to this changes very little about the normal way you play it, but opens up Rejuvenate triggers and Edge Prior as viable picks.

Perils of Production / Ember Cache

Perils of Production is 9 times out of 10 a prospective pick that you anticipate being useful later. Rarely is it immediately impactful when you can't effectively use the energy it provides before you get into more card draw. Swapping it with Ember Cache maintains this common slot as synergizing with energy builds, but allows Perils to be drafted later in the run once you've picked up a few Emberdrain cards or have more expensive cards to play.

Cave In

The original version of this card is detrimental in most cases and is rarely actually useful. Some very common feedback from my Umbra changes previously had been that Emberdrain wasn't present enough at the Uncommon level, and there was an opportunity as well to give Umbra a means to actually interact with backlines in a floor. The resulting rework here slots very effectively into Umbra's toolset and creates very interesting play when you decide if Emberdraining your own floor to Daze enemies is worth it.

Shadowsiege

Literally unplayable in core without Sketches of Salvation or Volatile Gauge, this card is now an actual take with a downside that can be played around. These changes further the Emberdrain archetype while creating a mid-combat balancing act of how much work you want Shadowsiege to do versus how much Emberdrain you can realistically sustain.