Vertex Animated Flags
https://www.unrealengine.com/marketplace/en-US/product/vertex-animated-flags
Logic Driver Pro – Blueprint Editor 5.1
https://www.unrealengine.com/marketplace/en-US/product/logic-driver-state-machine-blueprint-editor
Unreal Engine – Dialogue Plugin 5.1 – 5.3
https://www.unrealengine.com/marketplace/en-US/product/dialogue-plugin