Elemental Elevation - Greater Rune, Inspiration.
This will be when Rise of the Elements is in effect.
Elemental Elevation: After assisting in a dragon takedown, become an elemental for 4 minutes. Temporarily gain 5 - 10% of all stats from the defeated dragon. ( Based on level. ) Temporarily gain +80 - 500 bonus health. ( based on level. ) Permanently gain +50 health. Effects from elemental climate change is increased by 10%. ( Except Cloud Drake. )
Best champions:

Tactic:
If well planned with your team,
Kai'sa can utilize this in the mid game for a little more progress to her evolutions.
However, supports like
Leona can benefit greatly from this. However, due to being in inspiration; this could backlash if Leona does not get the drake buffs.