Zeref

120% boost Atk, Def, max HP and 30% boost to critical hit rate of Dark types, enormously boosts Dark elemental damage, Spark damage considerably boosts BB gauge, 15% damage reduction from Light, Dark types & raises Atk parameter limits to 130000

Probable damage reduction to 1 when Book of E.N.D. is equipped, 20% boost to all parameters for all allies, adds probable resistance against 2 KO attacks, considerably boosts Atk, Def, Rec relative to lost HP & raises Atk parameter limits to 180000

BB

Ankhseram Black Magic Lv. 4

3 DC32

30 combo random massive Dark attack on all foes, adds probable 1 turn Atk, Def reduction effects to attack for 3 turns, probability of activating BB/SBB/UBB twice for 2 turns, probability of raising allies from KO, enormously boosts BB gauge & boosts OD gauge

SBB

Ankhseram Black Magic Lv. 5

1 DC28

26 combo powerful Fire, Dark attack on all foes, 30 combo random massive Dark attack on all foes, hugely boosts Atk, Def, Rec for 3 turns, enormously boosts critical hit rate for 3 turns, probability of raising allies from KO, Spark damage considerably boosts BB gauge for 3 turns & enormously boosts Dark elemental damage for 3 turns

UBB

Ankhseram Black Magic MAX

1 DC33

30 combo massive Fire, Dark attack on all foes, enormous 3 turn Atk, Def reduction, activates BB/SBB/UBB twice for 2 turns, enormously boosts Atk, Def, Rec, critical hit rate and Dark elemental damage for 3 turns & Spark damage hugely boosts BB gauge for 3 turns