Power tree

Acid Blood
Vision of Death- can notice or sense someone's death if going to happen soon
Dark fire- level 1
Miasma emission- can admit various airborne toxins from the mouth that can cause various effects such as parlyzation
Unbound Soul- able to reach into different plains or different dimensions of reality and as well parallel ones
Shadow manipulation- level 1
Soul Mutilation- can cause heavy damage to the soul effecting, mind, body etc. usually used to erase memories and change personality
Magic weaponery- can summon his scythe, and also other magic weaponry if found and mastered
Dark fire-level 2
Dark fire-level 3
Shadow manipulation-level 2
Death physiology- takes the form of what others see as their own grim reaper, after going into this form he usually does not remember the events that had happened inside it
Reincarnation/object immortality- after the tomorio crystal having been destroyed, Cecil loses almost all memory of previous life except basic knowledge, he remains alive and is vunerable at that point until attached to another crystal
Soul sealing- pretty basic, has to seal souls from the recently caused deceased (murdered) into someone or something else

Combat

Clean swing- attack increases when using scythe
Whirlspin- Can spin scythe in circular motion to block projectiles
Scythe hook- can throw up to three people in a scythe swing
Amplify- having scythe or other magic weaponry can amplify certain aspects of powers depending on the weapon

Survival skills

Grave watch- power and defense increases while it's night
Tech support- has advanced knowledge on tech in his time