Witness testimony: “Ask the cavalry” invokes other observers.
Moral contrast: “I face war, but abstain at the spoils” combines daring and restraint.
Irony: “My hand gave him” recasts a spear-thrust as a gift.
Simile: clothing on a great tree evokes an opponent’s stature.
These techniques work together: a formidable adversary, hyperbolic action and a narrated victory build the speaker’s boast.