Explosive Defense Unit for Large Creatures

[Oriklad]

Hello Hivemind,

How would Explosive Defense Unit work on a large creature? Would the radius start in the center of the creature, or around the Large creature's 4-square block?

[Dracomicron]

Grenades detonate at the corner of a square. So, choose one vertex of your large creature and that becomes the center of the explosion. Being large, you have a lot of vertices to choose from.