Necromancy
Source
Starfinder Enhanced pg. 77
Twice per day when a d20 is rolled for a necromancy spell (such as a saving throw or attack roll), you can reroll that d20 as a reaction. Each subsequent time you choose this as a technomantic talent, you gain an additional use of this ability, up to a maximum of 4 times per day.
Dragonscript
ID
7975ca8e530a7300f79ff173