Works nicely with resurrection spells, which generally have long cast times, making them prone to interrupts.
Has especially good synergy with long-recharge spells copied through Echo or Arcane Echo since they would revert after 20-30 seconds anyway. Meteor Shower is a good example.
Anomaly! The spell cast through Glyph of Sacrifice casts in 1/4 second.
Anomaly! Contrary to the skill description, this skill appears to disable the spell it is used with for 30 seconds on top of the normal recharge time rather than add an additional 30 seconds to the recharge time as stated. As such, skills which would normally reduce recharge time such as Quickening Zephyr do not help to negate the negative side of this skill.