Which blood forms came with the October 14 update?

According to Netmarble’s October 8 patch preview, five new forms arrived with the October 14 update: one Mythic, two Legendary and two Hero. All five are shared forms, so the skill effect is the same whichever class equips them. The preview notes that details can change during development.

Bloodshape summon tickets from Uncommon to Legendary
Bloodshape summon tickets from Uncommon to Legendary · Image: Netmarble
Source / rights
Image / usage information: © Netmarble Corp. & Netmarble Neo Inc. Resmî VAMPIR görseli. · Image source ↗

The preview gives no summon rates for the new forms; the rates below describe the pool before October 14.

Short answer

Blood forms change your VAMPIR character's look and add stats and skills. Six grades, up to five paid re-summons from Hero grade, synthesis of duplicates with Netmarble's published rates, and the three collection effects.

What does a blood form give you?

Form grades
GradeNotes
Normal, advanced, rare Entry grades; feed synthesis
Hero Re-summon opens here: up to five paid rerolls, pick one result
Legend Duplicates power the transcendence effect
Mythic Top grade; six forms in the synthesis table

Rare grade and up carry a form skill. A class form's skill only works if the form matches your class; a common form's skill works for any class.

Source · guide.netmarble.comNetmarble Korea guide: blood forms

How do summoning and re-summon work?

Summon tickets are split by grade band and by class, so a Rare-to-Hero ticket and a class ticket pull from different pools; the probability page lists 27 ticket types. When a Hero-grade or better form lands, you can re-summon up to five times with diamonds. The cost goes up each time, and you choose one result from the original and all rerolls.

Source · guide.netmarble.comNetmarble Korea guide: form summoning rates

Diamond farming starts at 0:40, the summon safety net at 2:15.

What are the synthesis rates?

Synthesis rates (KR)
GradeForms in poolRate each
Normal 20 3.5%
Advanced 30 1.2% (3.2% in advanced synthesis)
Rare 40 0.5% (2.125% in rare synthesis)
Hero 45 0.3333% (1.9556% in hero synthesis)
Legend 22 0.5455% (4.09091% in legend synthesis)
Mythic 6 1.6667%

Failed synthesis at Rare grade and up builds points: 20 Rare points, 15 Hero points or 7 Legend points trade for a form of the next grade. Netmarble notes the rates are rounded and may not add up to 100%.

Source · guide.netmarble.comNetmarble Korea guide: form synthesis rates

What does the form collection give?

Collection effects
EffectTrigger
Possession Completion rate per grade
Connection Owning the linked forms
Transcendence Duplicate legend-grade forms

Transcendence is why duplicate legends aren't wasted.

FAQ

Is re-summon worth it in VAMPIR?
Only while you're still missing the form you want. Every reroll costs more diamonds than the last and you only keep one result, so if the first pull is already the one, stop.
Can you wear one form's look with another form's stats?
Yes. The appearance setting puts any form you own on top of the one you've equipped. You only get the look, not its stats, except for some special appearances that add a bonus.
Do familiars work the same way?
Mostly. Familiars also have six grades, synthesis, a collection with possession, connection and transcendence effects, and up to five diamond re-summons from Hero grade.

Related guides

Mounts: summoning, synthesis and codex

Collection and portraits