Right now we are in the buffing phase, which makes casted mystery easy to read and react to, but also could be a trap set by the other side.

The Summon can be used at the buff phase, in case you realize that the other team has higher initiative and you really need your barrier.

You can use the Summon right before your passiv barrier starts and after your summon dies, your whole team will enter the buffing phase again, securing the barrier for yourselves

Remember that the summon has its own mysteries, which are the same like the one from the group summon instance. This Summons max level is 100 and it's nearly impossible to kill it in the early stages of the game.

This other battlefield seems pretty lost XD

Against a Summon you have to consider to beat it as fast as possible, saving your mysteries for the enemies after it dies will definitly make you regret it

They have a Kisame on the other side, so I have to use my mystery immediatly to prevent it from stealing my chakra.

The snake is specialized in AoE damage, while the toad can select single targets.

Do you see it? Reentering the battle will make your team cast the passiv that hasn't been casted yet.

My chakra right now is 20 like the first round of a battle, but mysteries that are normally not castable on round 1 (like tobiramas) are avaible right now.

Personal opinion: Damage amplified a lot, since it's high level/bp against low level/bp. If all 3 Hiruzen have higher initiative than the enemy, it's basicly a playground for high bp.