Not sure what 373 effect does, but it looks like it triggers the spell Temporal Lapse Effect with these attributes:
1: Increase Hitpoints by 30000
2: Increase Mana by 10000
3: Increase Endurance by 10000
From looking at a few other 373 effects, it appears, it's triggered when the first spell wears off. Since there is no other effect on this spell, it does nothing for 1 tick, then triggers the Temporal Lapse Effect above.
Yther Ore.