Whip and Fire Wand evolution?

[Xorgul]

What are the requirements for Whip and Fire Wand evolutions? I think I tried whip with pretty much everything now is it possible to just get bad rng and not get an evolution even when you meet requirements?
Also what does stone mask do? I hear it makes the game much more difficult, dunno if I want to pick it up.

[thebadman]

Hollow heart is needed for whip,
spinach for fire wand.

Mask simply gives you gold, if you are on 6/7 items there is no reason not to pick it up unless you like being poor, if its levelup or you are under 6 items you will miss out on one passive that you want instead.

[Nyu]

if you found most out yourself, you can check the guide section. it shows every combo.

and stone mask does not make the game harder just takes off a slot for survival or damage perks. but gives gold bonus.
its like the exp perk kinda wastefull

only thing it maybe make the game "harder" you can only choose from limited amount of perks and they can popup and take the place of others.

but thats extrem min maxing and not needed for this game.

[Xorgul]

Ok, ty. Yea, those were the 3 last items that I was missing.