More details about the 3 builds below.
Thanks for watching and for the support !

Seals :
-Erdtree Seal, has the highest faith scaling, use it to cast every incantation
-Equip any seal that buffs the incantations you want to use in your off hand.

Stats :
-As close to 80 faith as possible (not more), the rest is up to you/the weapons you might want to use
-You can switch between all 3 builds without the need to respec

Fire / Blackflame build : 0:38
-Damage comes from stacking fire buffs and the off hand seal
-Catch flame is completely busted
-The blackflame part of the build is optional, Fire and Blackflame can be used as standalone builds
-Godslayer Greatsword and Blasphemous Blade are good weapon options
-Replace Godfrey Icon with Shard of Alexander if you plan on using ash of wars often

Lightning Build : 7:35
-Very good against large bosses
-The damage comes from stacking Lightning damage buffs and the off hand seal.
-Whatever lightning weapon you prefer.
-Replace Radagon Icon with Shard of Alexander if you plan on using ash of wars often

Kamikaze build : 7:16
-Glass canon, hard to play but very strong
-Can use pretty much any incantation
-Can cheese Elden Beast easily (pest's thread incantation)

Timestamps :
-Intro : 00:00
-Fire / Blackflame build : 0:32
-Margit : 0:53
-Godrick : 1:14
-Radhan : 1:48
-Morgott : 2:22
-Fire Giant : 2:57
-Maliketh : 3:52
-Godfrey : 4:42
-Radabeast : 5:43
-Kamikaze build : 7:16
-Lightning build : 7:35