100 mana cost is pretty ridiculous for a single-target ultimate with no CC or steroid attached to it.
I actually really like Darius but this unnecessarily gates him in a world of mobile champions with just as many offensive tools and often no resource costs attached to them at all.
Sailor Mint4 votesOutside of a few exceptions, ultimate spells cost 100 mana.
Darius' Ultimate will be essentially free when chain dunking while retaining its cost when using it solely for burst damage or missing executes.
ABlueQuaker1 votesBut the mana cost usually goes 100/60/40 or at least 100/80/60.
Sailor Mint1 votesUltimate mana costs are standardized at 100 at all ranks.
There are exceptions, but they are a minority.
Abyssphere1 votes[{quoted}](name=Red Arrow,realm=OCE,application-id=3ErqAdtq,discussion-id=uLwwsyNM,comment-id=00000000,timestamp=2015-03-29T06:47:25.076+0000)
But the mana cost usually goes 100/60/40 or at least 100/80/60.
That could not be further from true. On the few occasions where ultimate mana costs actually change as they're leveled up they almost always increase in mana cost. I can't think of any that go down.