PIERCES SPELL IMMUNITY:Yes
DISPELLABLE:Cannot be dispelled
Tethers Io to an allied unit, granting bonus movement speed to both. When Io restores health or mana, tethered units target gains a larger portion of that amount. The tether breaks when the allied unit moves too far away, or Io cancels the tether.
If you try to tether a unit that is 700 distance or further away from Io, he will latch on and pull himself closer to the tethered unit (to a distance of 300).
The tethered unit will heal faster.