Well I used it to just try something out. You need chronomancer, ancestral focus and ice casters with some ice eaters, ice amps and a frostfall vanguard . Relocating the relic with Jangar and using mason to give the health back can become pretty useful and hitting them with savage exploits can become pretty good. You can place a arctic bolt at distance un expected relocate the relic and possibly get some ap generation, a frost amulet and healing out of it. It does solve some problems against arrow eaters, splits, one with nora, cloak of skulls, a problem relic if need be and the big one IS spell resistance. The above BG could just run with out it as well. The first 4 games with it I just had very bad draws and still ended up with the win with out ever drawing any jangars frostfalls or dragon statues. When I do draw them it is pretty fun seeing Jangar rotating 4 Dragon statues around with chronomancer getting the next round of Dragon statues ready.
ya it's a fine use of the spell, but in the majority of cases using it to destroy an opposing units relic and hit something with the bolt would be more effecient.