I saw KT1 take his 6star Doom to r4 and some of y'all think 3stars should be kept in Cav crystals. I get the point of gamble in these crystals but you don't even get ISO from these 3stars or any resource, well enough to matter. From where I currently stand, ISO is scarce unless I either spend or grind a lot. I've devoted enough to this game to scrap for ISO. With 3stars out, at least you're guaranteed ISO to level up your champs given how ISO-expensive it is now to level up 6stars. I know the game economy is gradually changing but 3stars out of Cav might a way to assist. It's not as if that's the only way of getting 3stars (for rarity specific contents).