Prior to an update, Ritualist spikes were more popular. While subsequent updates reverted and modified some of the changes imposed in that update, many skills in the Channeling Magic line were no longer suitable for spikes.
Currently, Ritualist spikes in Heroes' Ascent largely spike by snaring and knocking down a target to trap the target in the range of Spirit Rift and following up with various other damaging skills. Because this spike is easy to see coming, precision timing of enchantment removal is a must for the spike to go through.
Ritspike is considered a gimmick build.