I will set portents in the sky and on earth:
Blood and fire and pillars of smoke;
"It seems likely that the Haggada cites the pasuk in Yoel to associate the Exodus and the apocalypse... Limited in space, the Haggada did not cite each and every pasuk verifying each and every "Egyptian" plague during the apocalypse. Instead, it merely quoted the first one. According to the Haggada, the final phrase of the four pasuk synopsis of Ki Tavo envisions an ultimate redemption modeled after our first redemption. The concluding word of "moftim" links to the pasuk in Yoel, which serves as the first indication that the plagues will reemerge during the apocalypse. The Haggada cites this one pasuk assuming that we can draw the allusion to the message and the linkage between the Exodus and the apocalypse."
From R. Moshe Taragin, "Five Hidden Components of Yetziat Mitzrayim" at https://etzion.org.il/en/holidays/pesach/five-hidden-components-yetziat-mitzrayim.