The phrase "a conspiracy that will" is correct and usable in written English.
It can be used when discussing a conspiracy that is expected to lead to a specific outcome or action in the future.
Example: "The novel revolves around a conspiracy that will change the fate of the entire nation."
Alternatives: "a plot that will" or "a scheme that will".
What's the next evidence of a gay conspiracy that will make Linda Harvey's head explode?
A family is caught in the middle of a grand political conspiracy that will change their lives forever in "Hostages," which hails from Jerry Bruckheimer and Jeffrey Nachmanoff.
Elsewhere in Iraq, however, the Shia revival is being seen as part of a Persian-led conspiracy that will enrich the Shia south at the expense of the already disenfranchised Sunni centre of Iraq.
His affair with Alicia has begun to awaken him to the possibilities of life, but he will be drawn, willy-nilly, by Vanessa and Jordan into an act of criminal conspiracy that will forever alter all their lives.
Branching plot lines based on player choice mix with cyberpunk and renaissance themes underscored by a sense of ambiguity and conspiracy that will be maintained until the final moments, insists game director Jean-Francois Dugas. Jean-Francois Dugas
I appreciate that I have so much more to see – the internet tells me of some massive conspiracy that will reveal itself in The Division's plot, going forward.
He could face a decade in prison if he's convicted on the charges of identify theft and conspiracy that will likely be brought against him, while the rapists he helped bring to justice will spend a fraction of that time behind bars.
"If what's happening is intentional and planned, then it's a conspiracy that I will not take part in," one member of the council, the political scientist Moataz Billah Abdel Fattah, wrote on Facebook, explaining his resignation and urging others to follow.
Alicia discovers a conspiracy tactic that will allow Rachel to testify, and Broussard is vindicated and set free.
The lower denial says that it's all a conspiracy — that any pain Americans feel will be because Obama wants them to feel pain.
