Summon a sunbeam to shine over your location, lasting 30 seconds. During this time, provided you remain within the beam, your magic damage will be increased by 50%. If your target enters the beam, they will be hit for 10%-20% of weapon damage every 2 seconds.
The player creates a circle of light covering a 7x7 area, granting them an increase of 50% to their magic damage as long as they stay inside the beam. A damage-over-time effect is applied to the primary target (at time of casting) if they enter the beam, causing damage for 10% to 20% of main-hand weapon damage every 2 seconds, for a total of 30 seconds. This damage-over-time is not influenced by magic level or stats for other equipment.
The ability was buffed with the release of the sirenic armour. Previously the effects only lasted for 10 seconds, making it quite impractical and inferior in comparison to Metamorphosis. However, now that it lasts 30 seconds, coupled with the damage over time effect, Sunshine is superior to Metamorphosis. The user is able to squeeze in both Asphyxiate and Wild Magic, the most damaging magic thresholds, or build up to an ultimate ability, both resulting in devastating damage. If a player uses the ring of vigour when using sunshine and drinks an adrenaline potion afterwards, Wild Magic should be used before Asphyxiate because Wild Magic will be off cooldown a few seconds before sunshine ends.
The advantage of this ability is that the Sunshine area effect does not seem to be affected by high defence, making this useful against bosses that are hard to hit.
With the Planted Feetperk, Sunshine will last for 37.8 seconds but the damage-over-time effect is removed. This perk may be worth using if training in multi-combat, as the damage-over-time effect only applies to the primary target when it was cast.
Sunshine can indirectly kill a target if it is used against them but the player does not directly attack them. The target will not retaliate back at the player who used it, if they are not aggressive. The same also affects Death's Swiftness, and may be a glitch.
Although the Sunshine ability appears to encompass a 5x5 area, it actually extends much farther.