Sigurd, Jarl of Ravensthorpe

Boast built a fragile little engine into the attack step: you only get the ability if you swung this turn, and only once, which is a natural governor on anything that pays off per activation. This one pays off by feeding Sagas. The Boast can either advance a lore counter on a Saga you control or peel one off, and a separate trigger fires only on the placing side: whenever you put a lore counter on a Saga, up to one other creature gets a +1/+1 counter. Not this body, though; the growth always lands on a teammate, so the payoff is a distribution engine rather than a way to grow the attacker that enabled it. That asymmetry is the whole design idea. Sagas normally tick forward on their own at the beginning of the precombat main phase, resolving their chapters and then leaving; here you get to steer that clock by hand, and advancing versus rewinding become two distinct levers: one grows the board, the other buys a return trip to a chapter you liked but grants nothing. The vigilance, trample, and lifelink on the body are less about combat math than about keeping the loop online, since attacking to enable Boast never costs you a blocker and the lifelink offsets the aggression the whole plan is built around. It is an unusual home for a Saga payoff: a three-color attacker whose reward wants to be spent every combat rather than banked, with the attack requirement and once-per-turn cap keeping it to a steady drip instead of a runaway loop.