Alright so after working this out with the mods and several interested parties, here is mostly-finalized plan:
Ravi realizes they need to get Proud out of there if they don't want the snakes exploding in Elian's basement
Alex attempts to hypnotize Proud to calm him down but gets knocked out before he can succeed
Ravi enlists the help of Danny and Kotetsu to get Proud out of the basement
A 6th snake shows up to defend Proud
The snake never reaches Proud, but will have to be distracted so Ravi & co can get to him (this allows for the event to break into 2 simultaneously running threads)
After the snake is out of the way, Danny phases Ravi/Kotetsu/Proud/Alex out onto the lawn so they can get to Ravi's car
Precures fighting on the lawn will be informed that Ravi & co are luring the snakes away, and to make sure nobody destroys the snakes before then because they will explode
Ravi drives out to the mines and threatens Proud to draw the snakes
Marisa & Reimu provide an aerial strike to take out the snakes, Danny intangibles everyone on the ground to protect them from the explosion
Success!
KEY THINGS TO NOTE REGARDING THIS PLAN:
There will be 2 new threads for this, one for the 6th snake and one for the Proudnapping
Proudnapping thread will be restricted to characters mentioned here
Thread for the 6th snake will be open to anybody who has not already engaged one of the snakes
The process of cutting through the chaos to get to Proud, getting the snake out of the way, and getting Proud out of the basement will take long enough that it won't cut anybody else's threads short when the snakes stop fighting to follow Proud
Proud is going to be squirming his way out of Danny's protective intangibility at the last second which means Proud is dead by the end of all this
PROUDNAPPING
KEY THINGS TO NOTE REGARDING THIS PLAN: