That won´t help…because it already could have this with transmuter and will be in conflict with much needed Revenant. 
Non-stackable %RR will be decent
Would interfer with Justicar Rings…something like “x% on Attack” would make stackable RR possible (e. g. like in Ring of Black Matriarch) imho.
I used it on Battle Mage, but on most builds I prefer Direwolf Crest or Mark of Consumption.
I removed it and some others from the list.