You magically link two creatures together. The creatures must be within 30ft of each other and if they move apart more than 30ft, the link is broken and the spell wasted. Once linked, any damage, healing or condition inflicted on one creature is also inflicted on the other, and if one creature dies, the other dies as well. A creature may attempt a Constitution Saving Throw against your spell DC to resist an effect passed by the link, provided they weren't the original target, and if they succeed, the link is broken. If the challenge rating discrepancy between linked creatures is five levels or more, the superior creature has advantage on the saving throw, while the inferior creature has disadvantage. Creatures more than ten levels of challenge rating apart can't be linked, and the spell automatically fails.
Multi-link: As a bonus action you can add 2 more creatures to the chain, spending 2 Void Points on each creature. The same rules for linking apply. Your Void Point Maximum is reduced by the same number you spend. Recovery depends on what gets transmitted:
- Nothing (link broken or spell expires): Void points recover at the start of your next turn.
- Any healing: Void points recover after 1 minute
- Any damage or averse condition: Void points recover after completion of short rest
- Death: Void points recover after completion of long rest
Preserve Link: You can spend 1 or more Void Points to preserve/extend a link past the success of a save. The creature still resists the passed effect if it saves, but the link remains. Your Void Point Maximum is reduced by the number you spend until you complete a short rest. You can preserve multiple links but you cannot apply multiple points to one link.