That is actually intended: all Passive outfit abilities should add +1 cost to the other outfits. I fixed the description just now to reflect that (the other Passive outfits already say that). I'll have it fixed for the [v0.15] update coming out very soon~I think i found another bug. When i use Leaf as underwear, the abilities of my 3 other outfits cost 1 mana more than they should. For example a Beret would give 1 mana for the cost of 1 mana, lol.