Box of Placeholders
It's a simple addon/compability mod, that adds placeholders from other mods (+ few own ones)
For list of placeholders, see https://github.com/Patbox/FabricPlaceholderAPI/wiki/Box-Of-Placeholders
Animation format:
{
"id": "example", //Id - used in placeholders
"frames": [ // Frames of animation
"<red>Hello there</red>",
"<blue>Placeholders! %bof:animation/example2%</blue>",
"<gold>Tiny potato <color:#e2bdba>[▋<gray>:)</gray>▉▉]</color></gold>"
],
"updateRate": 20 // How many display updates (from mod using placeholder) frame changes
}