Make Sign Glow (Effect) — Skript
Addon: Skript · Category: Effect · Since: 2.8.0, 2.17 (sign side support)
Syntax
make [[the] (front|back) [side[s]] of] %blocks/item types% have glowing textDescription
Makes a sign (either a block or item) have glowing text or normal text. If a sign side is not specified, the front side will be used by default.
Examples
make target block of player have glowing text