Hero Class Weapons Upgrades

[SpinelesS]

I think it’s crazy that the hero class weapons you get are all ranked Mythic and yet they only use 1 color mana.

How about adding “Gain the ability to use X color Mana” as one of the upgrades for these weapons?
If they could suddenly potentially gain mana from two sources, then they would be more deserving of that Mythic ranking.

[Fourdottwoone]

Given how underpowered some of them feel, even a third color might not be a bad idea. Summon a random demon for 16 purple mana? Pass. Sounds like a good way to replace those unpopular “create a random gem” modifiers.