Boosted by Buffs

Zhou Yan owed usury and accidentally fell off a cliff. Never thought... Okay, it's just the same old time travel, but... "Hey, add good luck buff." "Oh, add the ultimate understanding buff." "Oh, add the bluff buff." … With so many buffs, wouldn't he be invincible? But why doesn't this buff trigger regularly? The enemy is at hand, please trigger it quickly.