The way this Build works is that you'll carry your Seal in your left hand and weapon in your right, buffing it with either Black Flame Blade or Bloodflame Blade depending on the circumstance. Bloodflame Blade will boost your Bleed build up on your weapon, so if it already has Bleed on it, it will be even higher. It also boosts damage a bit.

Black Flame Blade has a very short cast time but very short duration. It does extra damage, and it's damage over time is based on the Max HP of the enemy, so it's more effective against high HP targets like Bosses and tough enemies, and is fantastic in Co Op where Bosses and enemies have even more HP. It also is good against enemies that can't Bleed.

Black Flame is your ranged spell that does solid damage, and a bit of damage over time as well based on the Max HP of the target, so just like Black Flame Blade is good against high HP enemies. However, you'll use this on many enemies just to clear some out before engaging in melee combat.

Catch Flame is great for enemies that are physical damage resistant, and is slightly cheaper than Black Flame. Use when you need fire damage up close.