lesser invisibility

[exid]

if I reveal LI after the declare spell step, is the spell cancelled?

LoS is lost, does it make the target ilegal?

[Sailor Vulcan]

You can only reveal lesser invisibility when you have priority. Priority means whenever you would be able to use a hand of bim's effect. So you cannot reveal lesser invisibility during an opponent's action.

[exid]

 

well... next i'll read the card befor asking!

[Kelanen]

This was precisely to stop it being used as a counterspell...

[exid]

so if LoS would be lost before the resolve step, the spell would be cancelled?

[Kelanen]

Correct. This is how Divine Intervention is used to counter spells.

It's currently the only spell that can cause this though (and L4, Epic), and I suspect there will never be another.

Other effects that potentially could do this are written to either use Upkeep or Priority to prevent the timing ever being used that way.

[Obsidian Soul]

I imagine that there could be a Dark version sometime, perhaps called Passage through the Underworld (otherwise identical to Divine Intervention).

[exid]

Correct. This is how Divine Intervention is used to counter spells.

divine intervention is a teleportation, it's clearly specified in the rules that teleportation cancelles the spell.

[Beldin]

I imagine that there could be a Dark version sometime, perhaps called Passage through the Underworld (otherwise identical to Divine Intervention).

It would worded quite differently. I would vote that such a spell would also require priority