Name: Ronaa's Yoke
Circles: Summoning / Life
Description:
The caster's summoned units gain +X to all saving throws, +2X to Will saves.
-or-
Summoning spells cost 20% less to cast and the summons summoned while Ronaa's Yoke is in effect gain +X HP.
The main idea behind Ronaa's Yoke is that the bond with all of the caster's summons is strengthened.
So, however we want to represent that stronger bond.