Those Dooms are acoming!
And all Latveria is coming with them!
Seriously, those Dooms will either provide the extra-power to defeat the Celestials or in the aftermath of the battle, they'll somehow be released and battle the Reeds to the death. (I hope for that one.)
"This is wrong." Oh really Reed? Cough: 42, Clor. Cough. Choke on your hypocrisy!