*Taking Gwendol's turn*
Gonff draws a dagger and runs 25 feet back towards Ripred. He readies an action to attack the first spider to come into range.
Seven-eyes, the spider that Fish had hit with his Magic Missile, then lowers itself* to the forest floor and shoots sticky webbing at Gonff!
Attack: (1d20+5)[25]
Gonff is covered in webbing!
Go, Ferb!
Spoiler: *OOCI'm counting the 'lowering' as purely vertical movement, rather than allowing the spiders to move diagonally downwards.