Radiant Power: Increase the Defence Power of Defences near you by xx% (30% maxed out)
An Explosive Trap deals 546 (2x DP) damage without any Relics .
With a Radiant Power Shard around it deals 11.889 damage.
The trap deals only 9.684 damage when it is supported by a Relic and has 4.208 DP.
While I have to admit that this is helping a lot and makes the aura/shard extremely useful I also have to admit that it is imbalanced and a probably a bug.