RiftPal definition
Energy Cost
An Energy Cost is paid using Energy from your Rune Pool. You normally add Energy by Exhausting Ready runes.
The runes stay in play after being Exhausted and can become Ready again later, allowing you to use them for Energy again.
Official reference
Riftbound Core Rules
Radiance 131.2, 163.1, 164.2.a, and 165
Radiance - October 9, 2026
Source updated