Spell: Pause

Found this in my Google Keep folder and thought it might be worth sharing; there is half a thought somewhere in my head that I have seen this already in an LotFP book - if I have, will someone put me out of my misery and let me know please?

On the one hand, this looks a little bit like a blanket way of halting magical effects. It did get me thinking though, that if a group with a few MUs spent a few rounds casting targeted spells at some great monster or something while a couple of Fighters/meat-shields held things back, there could be some tactical value - as well as a magical protection/deflection spell.

Of course, time has to catch up at some point...

Pause
Fourth Level Spell
Distance: A sphere of radius up to 30'/caster level (can be made smaller at MU discretion)
Duration: Caster's level in rounds
While this spell is in effect every spell subsequently cast by any Magic User or Cleric, and even any charge used in a rod, wand or other item, will be suspended. The caster must roll a d20 for each spell to determine the order that they resolve in after the Pause ends.
Spells in effect before Pause is cast are not effected (e.g., an invisible person is still invisible) and magic that is bound to a particular item or location still works (e.g., a flaming sword) so long as the power of that item was active before Pause was cast. Any power that must be activated is paused as well, unless the boundary of the spell is crossed, the power activated, and the boundary recrossed.
A spell "fired" from outside the boundary into the area may have unexpected effects (GM's discretion).