That would be some fucking dramatic irony. After 800 years, IMU gets his hands on an Ancient Weapon and what does it do? Send islands down to his enemy's prison.
		
		
	 
 If Eris is from Lulusia, Imu blowing it up makes a lot more sense, that's the kind of petty vindictive shit we've seen from Imu so far. 
Saturn made it clear to Devon/Augur that Saturn/Gorosei/Imu know Teach is Rocks' son, and a Davy/Davy Jones disciple. Naming his Flagship "Saber of Xebec" probably tipped them off.
	
	
		
		
	
	
Shanks wanted to talk about a certain Pirate: IE, Marshall Davy Teach, the son of Rocks Davy Xebec. 
	
	
		
		
	
	
This man actually showed up to the Reverie to rat out the child that escaped his father Garling's genocidal murder spree. 
Shanks: "Ayo, tell my Dad he missed one; Rocks' kid is still alive. Tell Imu I want the new Sexbox Three-Dicksy, the Celestial Dragon Game Console with all the Slave Simulator Games. Make sure 'Hunt me Harder, Mihawk' is one of the games, okay? Yooooo, byeeeee"
Warcury: "These freaking horny pirates, man. Not like our innocent little angel, St. Charlos." 
Like, all joking aside, Shanks telling the Gorosei Teach is a Davy and Rocks' son is SOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO IRONICALLY HILARIOUS, ARE YOU FUCKING SHITTING ME/!??!?!?!