Transition Mattes Toolkit is an awesome After Effects template that contains 142 transitions in a variety of styles. They're so easy to use and edit. A great way to create stunning slideshows, presentations, TV shows, commercials, promotions and events videos. Impress your audience with this clean and creatively animated AE template. Available in 4K.
There's even an Premiere Pro version and you can download it here
AEP
3840 x 2160