Quickspell (5e Feat)
From D&D Wiki
Prerequisites: Ability to cast spells.
Few things in war are as crucial as speed, and haste in spellcraft is a feat that few, even among the gifted, can achieve. Three times per day when casting a spell that normally has a casting time of one action, you can instead cast it as a bonus action. You regain expended uses of this feat after a long rest.