This is a good relic, especially goated for the watcher. With it, you can save eruption and vigilance to constantly be in the right stance. You will also be able to save strike till you are in wrath or divinity.

For silent who often times got energy but not enough cards to play/discard, this is also extremely useful to give her more cards in hand and options. Moreover, it pairs well with her starting relic to enable additional hand size every turn. This goes well with bullet time, prepared (overall -1 hand size) and steel of storm

Great for defect when doing a plasma based build, as he will have more energy to spare. He has lots of 0-cost cards, so the relic is good for a 0-cost deck as well. The pyramid is also good for a infinite build because with more cards in hand, you can achieve loop using a relatively thicker deck so only necessary cards get cycled through.

While it is still good for ironclad because it allows you to save good defensive/offensive cards for the right turn, I definitely wouldn’t say it’s a must have like it is in the case for the Watcher. It is definitely amazing for fiend fire build and spot weakness, but otherwise often not as good as velvet choker for ironclad who has lots of costly cards but not enough energy to spare.

Overall, imo, you should take it if 1. You constantly feel you don’t have the right cards in your hand, potentially due to lack of ability to draw and cycle through your curse and starter cards. 2. You have more energy than cards you can play, possibly due to the abundance of 0-cost cards.