Mystic Summons

Summons are not pets in the same sense as veno's pets. You cannot tame a summon. They are skills, which means you gain your summons as you learn the appropriate skills.

Basics

How do I get a summon?
The same way as you learn skills, at Mystic Skill Trainer. However, you will need a skill book in order to do this. At an appropriate level a quest will auto trigger. You need to finish the quest to get the book for your summon.

Can you unsummon it?
As for now it seems that you can't. The only way to get rid of the summon after you summoned it is to relog, die, let it die, halt it and move out of range, change to a catshop, embrace another player, summon another pet or mount, or through the sacrificing skills (see "Sacrificing Summons" below).

Do I need to level up my summons?
No. Summons stay same level as your character, but you have to resummon it after you level up.

How many summons can I have out at once?
There are two main categories of summons. One is a plant type and another is more of a pet type as veno's pets. You can only have one of the each summon types out at a time, plus a Vital Herb, so total of three.

Summon Types

Pet Type

There are two types of summons. The first one is the pet type, which are similar to the veno's pets. It means they have a pet's skill bar with own skills and actions just like veno pets do. With the exception of the Cragglord, they will stay with you for unlimited time until you or the summon dies or if you sacrifice it. You can only have one of these summons out at a time. These summons fall within the 3rd row from left in your skill tree, so there's a total of 4 summons of this type: Devil Chichyu (7), Storm Mistress (23), Salvation Emerges (33), Cragglord (59). The first three summons are permanent, the last one however only lasts for 20 sec.

The difference between the summons are their abilities, stats, and how Energy Leech affects them (see "Sacrificing Summons" below). As I already mentioned they have an own skill bar. Another thing about the pet type summon is that they need MP in order to use skills other than their basic attack. You can transfer your own MP to the summon with Transference, skill starting at level 17.

Also, please note that pet stats are based on the pet type, the pet's level, and on your stats. For example, if you get better armor that increases your PDef, you pets' PDef will increase as well.

Pet Details

Devil Chihyu (level 7-52)

Pet's Skills:

1. Folding Strike - Deals physical damage equal 3x to that of the Chihyu's base physical damage.

2. Skull Slap - Deals physical damage equal to Chihyu's base damage and stuns target 3.2-5.0 seconds.

Sage: Mana cost reduce by 10%, pet gains Boost skill.
Demon: Gain 15 chi, pet gains Boost skill.

3. Boost - Increase self base attack by 30% for 20 seconds.

Energy Leech: Increase your PDef by 46%-100% and Critical Hit Rate by 16%-30% for 20 seconds.

Storm Mistress (level 23-68)

Pet's Skills:

1. Luna Blade - Deals metal damage equal to 6x to that of mistress's base magic damage.

2. Hush - Deals metal damage equal to 4x of mistress's base magic damage.

Sage: Mp cost reduce by 10%, pet gains Moonshade skill.
Demon: Gain 15 chi, pet gains Moonshade skill.

3. Moonshade - Seal target for 3 seconds.

Energy Leech: Increase your MDef by 50% and Magic Attack by 150% for 20 seconds.

Salvation (level 33-78)

Pet's Skills:

1. Aegis Sphere - Adds a shield to a target that can absorb 750-3000 points of damage, improves magical and physical defenses for 5% for 45 seconds.

2. Martyrdom - takes 22%-40% of target's damage, each point of damage cost 2 of the summon's mana.

Sage: MP cost reduced by 10%, pet gains Warp Shield skill.
Demon: Gain 15 chi, pet gains Warp Shield skill.

3. Warp Shield - Absorb 600 damage for all party members within 12m, also increase their defense by 5%.

Energy Leech: Grants you a shield which can absorb 4000 damage and get a 4500 HP Falling Petals.

Cragglord (level 59-86)

Pet's Skills:

1. Eruption - Deals 4x base magic damage and targets suffers ?-? burn damage, targets in an area of 5 meters.

2. Comet Fall - Deals 3x base physical damage to targets in an area of 10 meters.

Sage: MP cost reduce by 10%, exist for additional 3 sec.
Demon: MP cost reduce by 10%, 25% chance only use one spark.
Energy Leech: N/A
Note: This summon only lasts for 20 seconds.

Plant Type

Now the second type of summons are the ones in the 5th row from left, a total 6 summons of this type. The first 5 summons stay out for 1 minute, while the last 6th one only last 20 sec as well. Their difference is again their abilities and what they do when Lysed. They either do damage, cause some kind of debuff or paralyze, or do heals. But these summons don't have a skill bar compared to the first type. You can also not heal them and they don't use MP.

Most of them are also AoE except Punishing Sting which is a single target. If a mob dies and the summon is still out, it will auto attack/debuff other mobs nearby. Also first time you summon these, you need to have a target to where you want it summoned. It will stay in same place until it disappears or is Lysed.

You can only have one of this type of summons out at a time, with the exception of the Vital Herb, which can be summoned alongside any other plant summon.

Plant Details

All plants last 60 seconds, except Vial Herb, which only lasts 20 seconds.

Punishing Sting

Skill: Deals constant physical damage.
Lysing: Deals deals AoE 4x physical damage.

Befuddling Creeper

Skill: Has a chance to reduce attack rate and casting speed of nearby enemies by 22%-40% and reduce physical and magic defenses by 11%-20%. All debuffs last for 6 seconds.
Lysing: Deals moderate AoE damage and has a great chance to reduce attack rate and physical and magic defense for 18 seconds.

Spidervine

Skill: Has a chance to decrease movement speed by 22%-40% and to reduce physical and/or magic attack damage by 11%-20%. All debuffs last for 6 seconds.
Lysing: Deals moderate AoE damage and has a high chance to decrease enemies' movement speed and/or attack damage for 12 seconds.

Listless Blossom

Skill: Has a chance to cause nearby enemies to sleep for 6 seconds.
Lysing: Deals moderate AoE damage and has a great chance to cause nearby enemies to sleep for 8.5-13 seconds.

Healing Herb

Skill: Restores 35-125 points of health to nearby squad members every 2 seconds for 60 seconds.
Lysing: N/A

Vital Herb

Skill: Heals nearby allies for ?-? per second and increases HP recovery rate by 5-50 per second.
Lysing: N/A

Sacrificing Summons

There are two skills that makes you "sacrifice" your summons. In other words explode and give different kinds of effect. For pet summons this skill is called Energy Leech, learned at lvl 49. It only works with the first 3 summons, but not with Cragglord. Each of the 3 summons of pet type that I mentioned earlier (beside their skills and normal attacks) also give some sort of effect when you sacrifice them by using Energy Leech. In each of the summon skill description you can see e.g "Use Energy Leech to improve your physical defense by X% and Critical rate by X%". This is the case of Devil Chihyu summon. By sacrificing pet summons you normally get a positive effect on yourself (buffs).

For the plant type summons goes a different sacrificing skill, called Lysing, which makes them explode (learned at level 19). Again, depending on the plant/summon, it will cause a negative effect (debuff and/or AoE damage). E.g. Punishing Sting description says, "The Lysing of Sting Nettle (description has a different name) deals 4x physical damage". The Lysing skill makes all plants within range explode (18.4m range at level 1) and cause AoE damage for 10m of each plant. Since you can't have more than one plant summon out at a time, my assumption is that plants of all other mystics within the range will be affected. You need to have a target selected to use Lysing. By target it means the mob, not the plant that you want to sacrifice. Now if you have for example 5 plants around the target (yours and other mystic's plants), they will all cause 4x dmg each in an area of 10m around each plant. So the actual area could be greater, depending on how spread out they are. Cool huh? Just note to be careful, because you can aggro a lot of mobs when not needed.

Leveling Up Summon Skills

Note that this section should not be mistaken with the level of the summons (which they gain themselves as your character level up). This is concerning leveling your summon skills (which goes from 1 to 10 plus Sage or Demon) and the skills of your summons.

By leveling your plant summon skills, a couple things will happen. You will improve either a) their healing ability (goes for both healing plant summons), b) their debuffs after plant been sacrificed, and c) debuffs when they been summoned. This varies between the plants. For example upgrading Listless Blossom only improves sleeping effect that comes from sacrificing plant, not the effect from a summoned plant.

I am unsure what happens if you level up Punishing Sting skill/summon. According to ecatomb there's no other stat that changes other than MP and range.

For the pet type summons goes that mainly their buffs/healing ability gets better when you level up your summon skill. Also since they have their own skill bar, their skills wills automatically level up when you have leveled your summon skill. For example my Devil Chihyu is level 4 now and my summon's skills also upgraded to level 4. I'm not sure if it goes all the way to 10 which is the max level of each summon skill. This has to be checked.

Leveling Sacrificing Skills

By upgrading Lysing, you will increase the area within which plants will explode. Does not affect explosion area of the plants. According to ecatomb, the cooldown will also decrease. At level 1 Lysing has a cooldown of 7.5 sec and at level 10 3 sec.

By upgrading Energy Leech it increases the immune to stun and freeze time from 3.3 sec to 6 sec at level 10, and decreases the cooldown from 165 seconds to 30 seconds.