"Non-damaging assists" count as 25 combat points according to the tooltip when you hover over combat score at the end of a match and I think this is far too low. Imagine an averagely decent game will give you 10-15 assists over 20 rounds....

Omen's ult is not that useful except in going to order sites quickly or getting behind enemies(that too most time get blocked), so it will be cool of he could use his ult to get the spike and then return safely.