This is a veto
Oh man...
How do I even start here. This map pretty much sums up the entirety of the problems of the current BN system. Low quality maps that get ranked because there is technically nothing wrong with them. I think in a perfect world, nobody with a conscious mind will willingly push these types of maps forward, but, nobody is perfect I guess.
Fall, if you have the heart as a mapper to push good quality maps to ranked, you should at least thin out about 70% of the unnecessary, bloated diffs in this set. Between them, none of them provides anything substantially "fresh" to the players, and are frankly made so people can play two of the same diffs and get two of the same pp scores.
But I know you will probably not listen to my advice above, so let's get to what I would consider my baseline.
(start reading from here if you only care about the main reasons of the veto)
ACTIVE: Mordekaiser aims his mace towards the target enemy champion, slowing them by 75% and revealing them over the cast time, and then banishing them with him to the Death Realm for 7 seconds.
Malzahar suppresses a target champion for 2.5 seconds, dealing 125 / 200 / 275 (+80% of ability power) to the target and creating a zone of negative energy around them for 5 seconds, which deals 10 / 15 / 20% (+2.5% per 100 ability power) maximum health as magic damage over the duration to all targets in the Null Zone for the duration.
CHARM: Ahri blows a kiss that charms the first enemy hit for 1.2 / 1.4 / 1.6 / 1.8 / 2 seconds and deals 80 / 110 / 140 / 170 / 200 ( + 60% of ability power)