Level 81 mage.
Quick reminder:
Target the player, get the buff on yourself, then you cast your summon pet spell.
After I did that, my BLUE con level 81 Air Elemental went to YELLOW on me, before I used Burnout Viii. His hit points went from 22k to 27k. I used the prime elemental symbiosis spell to damage him to get the values. I.e. 1391 damage = 5% drop in hp... 1391/.05 = 27820. Cuz 5% of 27820 is = 1391 damage.
When I had tried it before targeting the elemental, and NOT on myself, he stayed BLUE con.
So tldr: target player, use shard, THEN cast pet summon spell. = BUFFED pet.