Starmetal dragons reflect the unusual nature of the metals that share their names. Other, rarer starmetal dragons might exist.
As with most true dragons, a starmetal dragon’s size is based on its CR (CR 3–4: Small; CR 5–6: Medium; CR 7–10: Large; CR 11–16: Huge; CR 17–24: Gargantuan; CR 25: Colossal), as is its fly speed (CR 3–6: 150 ft. [Su, average]; CR 7–10: 200 ft. [Su, average]; CR 11–16: 200 ft. [Su, clumsy]; CR 17–25: 250 ft. [Su, clumsy]). If a starmetal dragon’s CR is 11 or higher, it has the crush universal creature rule and spell resistance equal to 11 + its CR. Starmetal dragons’ age categories match those presented elsewhere.
Starfinder Alien Archive 3 © 2019, Paizo Inc.; Authors: Saif Ansari, Kate Baker, John Compton, Adam Daigle, Katina Davis, Eleanor Ferron, Crystal Frasier, Leo Glass, Sasha Lindley Hall, Amanda Hamon, Thurston Hillman, James Jacobs, Jenny Jarzabski, Virginia Jordan, Jason Keeley, Natalie Kertzner, Luis Loza, Lyz Liddell, Ron Lundeen, Crystal Malarsky, Robert G. McCreary, Hilary Moon Murphy, Adrian Ng, Joe Pasini, Lacy Pellazar, Samantha Phelan, Jessica Redekop, Simone D. Sallé, Michael Sayre, Owen K.C. Stephens, James L. Sutter, Jason Tondro, Diego Valdez, and Linda Zayas-Palmer.