We all know the importance of killer equipment and materia. But did you know of units bring single and party wide killer buffs too? Below is a list of active unit killer abilities according to unit. Utilize these units in battles like Trials, Dark Visions, and Clash of Wills. Please note, passive abilities are not included in these lists.
Game: FFX
Buff Type: PARTY
Spirit Killer Value: 160%
Cooldown Ability: Unlock Spiritslayer (515123) on turn 1 [5 turns CD]
Increase physical damage against Fairies by 160% to all allies for 4 turns
Increase magic damage against Fairies by 160% to all allies for 4 turns
Game: FFX
Buff Type: PARTY
Spirit Killer Value: 160%
Cooldown Ability: Unlock Spiritslayer (515123) on turn 1 [5 turns CD]
Increase physical damage against Fairies by 160% to all allies for 4 turns
Increase magic damage against Fairies by 160% to all allies for 4 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 150%
Cooldown Ability: Unlock Let's settle this now! (1092071) on turn 1 [10 turns CD]
Increase physical damage against Humans and Fairies by 150% to all allies for 4 turns
Increase magic damage against Humans and Fairies by 150% to all allies for 4 turns
Increase break resistance to MAG by 100% for 4 turns to all allies
Increase ability modifier of Darkga (20470), Darkga+1 (70486), Darkga+2 (70487), Darkga+3 (70488), Darkra (20460), Darkra+1 (70517), Darkra+2 (70518), Darkra+3 (70519), Stonga (20250), Stonga+1 (70477), Stonga+2 (70478), Stonga+3 (70527), Stonra (20130), Stonra+1 (70514), Stonra+2 (70515) and Stonra+3 (70516) by 30x to all allies for 4 turns
Increase LB gauge by 60 to caster
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 150%
Cooldown Ability: Unlock Crowning Veil (514700) on turn 1 [5 turns CD]
Add Light element (100%) to physical attacks for 4 turns to all allies
Increase Light physical damage by 25% to all allies for 4 turns
Increase Light magic damage by 25% to all allies for 4 turns
Increase physical damage against Fairies by 150% to all allies for 4 turns
Increase magic damage against Fairies by 150% to all allies for 4 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 150%
Cooldown Ability: Unlock Let's settle this now! (1092071) on turn 1 [10 turns CD]
Increase physical damage against Humans and Fairies by 150% to all allies for 4 turns
Increase magic damage against Humans and Fairies by 150% to all allies for 4 turns
Increase break resistance to MAG by 100% for 4 turns to all allies
Increase ability modifier of Darkga (20470), Darkga+1 (70486), Darkga+2 (70487), Darkga+3 (70488), Darkra (20460), Darkra+1 (70517), Darkra+2 (70518), Darkra+3 (70519), Stonga (20250), Stonga+1 (70477), Stonga+2 (70478), Stonga+3 (70527), Stonra (20130), Stonra+1 (70514), Stonra+2 (70515) and Stonra+3 (70516) by 30x to all allies for 4 turns
Increase LB gauge by 60 to caster
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 150%
Increase physical damage against Fairies by 150% to all allies for 3 turns
Increase magic damage against Fairies by 150% to all allies for 3 turns
Reduce physical damage from Fairies (25%) done to all allies for 3 turns
Reduce magic damage from Fairies (25%) done to all allies for 3 turns
Increase morale by 50 plus 25 for each Fairy unit on the field for this team
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 150%
Cooldown Ability: Unlock Swelling Current (916225) on turn 1 [7 turns CD]
Increase physical damage against Demons and Fairies by 150% to all allies for 5 turns
Reduce physical damage from Demons and Fairies (55%) done to all allies for 5 turns
Increase Water physical damage by 45% to all allies for 5 turns
Increase Water magic damage by 45% to all allies for 5 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 110%
Increase physical damage against Fairies by 110% to all allies for 5 turns
Increase magic damage against Fairies by 110% to all allies for 5 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 110%
Increase physical damage against Fairies by 110% to all allies for 5 turns
Increase magic damage against Fairies by 110% to all allies for 5 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 100%
Cooldown Ability: Unlock Severing the Chains of Self-Sacrifice (1235191) on turn 1 [5 turns CD]
Increase physical damage against Aquatics, Machinas and Fairies by 100% to all allies for 3 turns
Increase magic damage against Aquatics, Machinas and Fairies by 100% to all allies for 3 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 100%
Cooldown Ability: Unlock Severing the Chains of Self-Sacrifice (1235191) on turn 1 [5 turns CD]
Increase physical damage against Aquatics, Machinas and Fairies by 100% to all allies for 3 turns
Increase magic damage against Aquatics, Machinas and Fairies by 100% to all allies for 3 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 100%
Increase ATK and MAG by 200% for 4 turns to all allies
Increase physical damage against Fairies and Plants by 100% to all allies for 4 turns
Increase magic damage against Fairies and Plants by 100% to all allies for 4 turns
Fill esper gauge by 4
Game: FFVI
Buff Type: PARTY
Spirit Killer Value: 75%
Increase physical damage against Fairies by 75% to all allies for 3 turns
Increase magic damage against Fairies by 75% to all allies for 3 turns
Game: FFXV
Buff Type: PARTY
Spirit Killer Value: 75%
Cooldown Ability: Unlock The Power of Kings (510366) on turn 1 [6 turns CD]
Increase physical damage against Demons, Humans, Fairies and Reapers by 75% to all allies for 4 turns
Increase magic damage against Demons, Humans, Fairies and Reapers by 75% to all allies for 4 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 50%
Reduce resistance to Water and Light by 110% for 5 turns to one enemy
Reduce damage taken by magic attacks by 45% to all allies for 5 turns
Increase physical damage against Fairies by 50% to all allies for 5 turns
Increase magic damage against Fairies by 50% to all allies for 5 turns
Game: FFBE
Buff Type: PARTY
Spirit Killer Value: 50%
Increase physical damage against Beasts, Avians, Aquatics and Demons by 50% to all allies for 5 turns
Increase physical damage against Humans, Machinas, Dragons and Fairies by 50% to all allies for 5 turns
Increase physical damage against Insects, Stones, Plants and Reapers by 50% to all allies for 5 turns
Use Overdrive - Endless Arsenal (915234) next turn on caster
Use Overdrive - Endless Arsenal (915234) after a 2 turn delay on caster
Game: FFV
Buff Type: PARTY
Spirit Killer Value: 25%
Increase DEF and SPR by 120% for 4 turns to all allies
Increase physical damage against Fairies by 25% to all allies for 4 turns
Increase magic damage against Fairies by 25% to all allies for 4 turns
Restore 10000 HP split over 4 turns to all allies
Game: Octopath Traveler
Buff Type: PARTY
Spirit Killer Value: 20%
Increase MAG by 130% for 3 turns to all allies
Increase physical damage against Fairies by 20% to all allies for 3 turns
Increase magic damage against Fairies by 20% to all allies for 3 turns